Terms starting with P.

p-type

In semiconductor physics, p-type (positive-type) material is silicon doped with atoms such as boron that have fewer valence electrons, creating mobile vacancies called holes that carry positive charge. Paired with n-type material, it forms the p-n junctions at the heart of diodes, transistors, LEDs, and solar cells. The movement of holes toward the junction is what enables current control in these devices.

Example: The p-type layer in a solar cell, which pairs with the n-type layer to create the electric field that separates light-generated charges.

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P. C. Mahalanobis model

The P. C. Mahalanobis model is the heavy-industry-led growth strategy that shaped India's Second Five Year Plan (1956-61). It argued that investing scarce resources in capital goods and machine-building industries would accelerate long-run growth, accepting slower consumption gains in the short term. For UPSC, it is the definitive explanation of why the Second Plan emphasised steel plants and heavy engineering.

Example: Second Five Year Plan (1956-1961)

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P. T. Usha

P. T. Usha is India's track-and-field legend of the 1980s, narrowly missing Olympic bronze at Los Angeles 1984, and now president of the Indian Olympic Association. She bridges the eras of neglect and institutional support in women's athletics. She is the essay's historical anchor for women in Indian sport.

Example: P. T. Usha's sprinting career and her presidency of the Indian Olympic Association.

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P. V. Sindhu

P. V. Sindhu is India's badminton star, Olympic silver medallist at Rio 2016 and bronze medallist at Tokyo 2020, and a world champion. She is the face of women's sporting excellence in the essay bank. Her career exemplifies the TOPS-to-podium pipeline.

Example: P. V. Sindhu's Olympic medals and world championship in badminton.

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P.C. Mahalanobis

P. C. Mahalanobis (1893-1972) was the Indian statistician who founded the Indian Statistical Institute in Kolkata in 1931 and pioneered the Mahalanobis distance in statistics. As the architect of the Second Five Year Plan's heavy-industry strategy, he shaped India's early planning. For UPSC, he links statistics, institution-building and the planning era, and is a recurring prelims personality.

Example: Founded the Indian Statistical Institute, Kolkata, 1931

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P.C. Mahalanobis's

P. C. Mahalanobis's refers to the ideas and legacy of statistician P. C. Mahalanobis: the Mahalanobis distance in multivariate statistics, the founding of the Indian Statistical Institute, and the heavy-industry growth model behind the Second Five Year Plan. For UPSC, the possessive form usually signals questions on his planning strategy or statistical contributions rather than biography alone.

Example: The Mahalanobis model of the Second Five Year Plan

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P.V. Narasimha Rao

P.V. Narasimha Rao is India's ninth Prime Minister, serving from 1991 to 1996. Heading a minority government after Rajiv Gandhi's assassination, he launched the 1991 liberalisation, privatisation and globalisation reforms with Manmohan Singh as Finance Minister, dismantling industrial licensing. He also initiated the Look East policy. For UPSC, Rao is the GS-3 pivot: the leader who moved India from a controlled economy to a market-oriented one. He received the Bharat Ratna in 2024.

Example: The New Industrial Policy of July 1991, which abolished industrial licensing for most sectors.

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P.V. Rajamannar

P. V. Rajamannar was a jurist who served as the first Indian Chief Justice of the Madras High Court after independence and chaired the landmark Centre-State Relations Inquiry Committee set up by Tamil Nadu in 1969. Its 1971 report demanded greater state autonomy, curbs on Article 356 and a permanent Inter-State Council. For UPSC federalism questions, Rajamannar is the go-to pre-Sarkaria reference.

Example: Rajamannar Committee report, 1971

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P2P lending platforms

P2P lending platforms are online marketplaces that match individual lenders with borrowers directly, with the platform acting only as an intermediary and not as a lender. In India, the RBI regulates them as NBFC-P2P under directions issued in 2017, capping exposures and mandating escrow accounts. For UPSC GS-3, they illustrate fintech innovation, financial inclusion and the regulatory perimeter of shadow banking.

Example: RBI's NBFC-P2P directions, October 2017

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paan (betel) chewing

Paan (betel) chewing is the practice of chewing betel leaf with areca nut, slaked lime and often tobacco, common across South and Southeast Asia with deep roots in hospitality and ritual. It is linked to oral cancers and drives public-health and tobacco-control campaigns. For UPSC, it appears in GS-1 on art, culture and social practices, and in GS-2 on public health and tobacco regulation under COTPA.

Example: the GI-tagged Banarasi paan of Varanasi

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Pabna Agrarian Leagues (1873-76)

The Pabna Agrarian Leagues were peasant organisations formed in Pabna district of Bengal between 1873 and 1876 to resist oppressive zamindari demands such as arbitrary rent hikes and evictions. Peasants organised rent strikes and legal battles in a largely non-violent movement. For UPSC they are a key pre-Gandhian peasant movement showing agrarian unrest under colonial land revenue systems, culminating in the Bengal Tenancy Act of 1885.

Example: Bengal Tenancy Act, 1885, the legislative outcome of the unrest

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Pacific

Pacific is the Pacific Ocean, the world's largest ocean, spanning from Asia and Australia to the Americas. In UPSC it almost always appears as the Indo-Pacific, the geopolitical frame for India's Act East policy, maritime security, freedom of navigation, and groupings such as the Quad. Prelims may test straits and island chains; mains uses the region for questions on India's strategic autonomy and China's naval presence.

Example: the Quad grouping of India, the US, Japan and Australia

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Pact of Steel

The Pact of Steel is the military alliance treaty signed on 22 May 1939 between Nazi Germany and Fascist Italy. It committed each side to support the other with military force if either went to war, binding Mussolini to Hitler's expansionist plans. For UPSC it is a standard prelims fact on the road to the Second World War and appears in GS-1 world history answers on the failure of collective security before 1939.

Example: signed on 22 May 1939 between Germany and Italy

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padayatra

A padayatra is a march on foot undertaken for a political, social or religious cause, turning physical endurance into public mobilisation. It has been a signature Indian form of protest, from Gandhi's marches to contemporary campaigns. For UPSC, it serves GS-1 on modern history and the national movement, and GS-2 on social movements and democratic protest.

Example: Gandhi's Dandi March of March-April 1930

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Padding the answer with six sketchy options

This is not a formal UPSC term but an answer-writing observation: padding an answer means filling word count with vague, low-quality points instead of analysis. In mains, examiners reward structured argument, evidence and interlinkages, so padded answers with repetitive or sketchy options score poorly. It matters for UPSC as a caution: concise, content-rich answers outperform long, diluted ones in GS papers and the essay.

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paddy transplantation

Paddy transplantation is the practice of raising rice seedlings in nurseries and then planting them in flooded fields, rather than sowing seed directly. It gives better weed control and yields but demands heavy water and labour. For UPSC, it anchors GS-3 on agriculture, groundwater use and the stubble-burning debate, and GS-1 geography on rice cultivation in the Indo-Gangetic plains.

Example: the puddled transplanted-rice system of Punjab and Haryana

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Padma Shri Popatrao Pawar

Padma Shri Popatrao Pawar is the sarpanch of Hiware Bazar in Maharashtra who led the village's watershed-led transformation and received the Padma Shri for his work. He mobilised the gram sabha to enforce bans on grazing, liquor and borewells, and to build contour bunds and check dams through shramdaan and government convergence. For UPSC he personifies decentralised natural-resource governance and the role of local leadership in rural development.

Example: His model of five bans enforced by village consensus is quoted in discussions of participatory water management.

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Padma Vibhushan

The Padma Vibhushan is India's second-highest civilian award, given for exceptional and distinguished service in fields including science, public affairs, arts, sports and social work. It ranks below the Bharat Ratna and above the Padma Bhushan and Padma Shri in the Padma awards series instituted in 1954.

Example: Space scientist Vikram Sarabhai, who founded India's space programme, was conferred the Padma Vibhushan posthumously in 1972.

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Padmapani Bodhisattva

Padmapani Bodhisattva is the famous mural of the lotus-bearing bodhisattva Avalokiteshvara in Cave 1 at Ajanta, Maharashtra. Painted in the 5th century CE under the Vakatakas, it shows the bodhisattva with a serene expression, elaborate jewellery and a lotus, epitomising Gupta-age Buddhist art. It is a staple UPSC prelims image-based question on Ajanta paintings and ancient Indian art.

Example: the Cave 1 mural at Ajanta, Maharashtra (5th century CE)

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padmasana

Padmasana is the lotus posture of yoga, in which the practitioner sits cross-legged with each foot resting on the opposite thigh and the spine erect. It is a foundational meditative asana prescribed in classical texts like the Hatha Yoga Pradipika for pranayama and dhyana. For UPSC, it belongs to GS-1 on art, culture and yoga, and to GS-2 on AYUSH and the International Day of Yoga.

Example: the Buddha depicted in padmasana in dhyana in classical temple sculpture

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Padshahnama

Padshahnama is the official chronicle of the reign of the Mughal emperor Shah Jahan, commissioned by him and written principally by Abdul Hamid Lahori. It records court events, campaigns, buildings and administration in elaborate Persian prose. For UPSC it matters as a primary source for Shah Jahan's reign in medieval Indian history, frequently cited for the construction of the Taj Mahal and the zenith of Mughal court culture.

Example: written by Abdul Hamid Lahori at Shah Jahan's court

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PAFF

The People's Anti-Fascist Front is a militant proxy outfit in Jammu and Kashmir that emerged around 2020, widely assessed as a front for Jaish-e-Mohammed. Like TRF, it gives Pakistan-backed militancy a local name. It claimed several attacks on security forces in the Pir Panjal region. It matters as evidence of the rebranding strategy of proxy groups.

Example: PAFF claims of attacks in Rajouri-Poonch

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paga

The paga was the standing cavalry of Shivaji's Maratha army, the regular troopers whose horses and arms were supplied by the state, as distinct from the shiledars who brought their own mounts. It was the professional core of Maratha mobile warfare, mustered and paid directly by the king. The word also lives on in the Pakke Paga Hornbill Festival, the annual hornbill-conservation festival of the Nyishi community at Seijosa in Arunachal Pradesh. For UPSC, the cavalry sense serves GS-1 on Maratha military organisation, and the festival sense GS-3 on community-led conservation.

Example: Shivaji's paga, the state-maintained standing cavalry of the Maratha army

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Pagal Panthis

The Pagal Panthis were a nineteenth-century peasant movement in the Mymensingh region of Bengal, led by followers of the religious preacher Karam Shah and his successor Tipu. Blending a syncretic sect with agrarian grievance, they resisted zamindari oppression and revenue demands. The movement matters for UPSC as an early example of peasant resistance combining religious organisation with economic protest, a pattern repeated in later agrarian uprisings.

Example: The Pagal Panthi uprising of the 1820s to 1830s is grouped with the Sanyasi and Santhal revolts in peasant-movement questions.

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pagoda

A pagoda is a tiered tower with multiple eaves, originating in Indian stupas and developed in East Asia as a Buddhist shrine housing relics. In Indian history the word also named a gold coin issued by South Indian kingdoms. For UPSC, it serves GS-1 on art and architecture and Indo-Chinese Buddhist links, and ancient-economy questions on coinage.

Example: the gold pagoda coins of the Vijayanagara Empire

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pagodas

Pagodas is the plural covering the tiered Buddhist towers of East and Southeast Asia as well as the gold coins called pagodas minted by medieval South Indian states. In art history they illustrate the stupa's transformation abroad, and in economic history they evidence monetised trade. For UPSC, they belong to GS-1 on ancient art and architecture, and on coinage.

Example: the Shore Temple complex at Mahabalipuram, called the Seven Pagodas by early European travellers

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Pahalgam

Pahalgam is a tourist town in Jammu and Kashmir's Anantnag district, known for the Lidder river valley and as the base for the Amarnath Yatra. It entered national security discourse after the 22 April 2025 terror attack in the nearby Baisaran valley, in which 26 civilians were killed. For UPSC, Pahalgam is the trigger event for Operation Sindoor and the 2025 to 2026 debate on cross-border terrorism.

Example: India's Operation Sindoor of May 2025, striking terror camps in Pakistan and Pakistan-occupied Kashmir, was launched in response to the attack.

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Pahalgam terror attack

The Pahalgam terror attack was the 22 April 2025 massacre of 26 civilians, mostly tourists, at Baisaran meadow near Pahalgam in Jammu and Kashmir, claimed by The Resistance Front. It was the deadliest civilian attack in the region in years and the trigger for Operation Sindoor, India's retaliatory cross-border strikes in May 2025. It matters because it shifted India's counter-terror doctrine toward pre-emptive, publicly owned retaliation.

Example: 26 civilians killed at Baisaran, Pahalgam, on 22 April 2025

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Pahartali European Club

The Pahartali European Club is the colonial-era club in Chittagong (now in Bangladesh) that symbolised British racial exclusion, infamous for its signboard reading 'Dogs and Indians not allowed'. Surya Sen's revolutionary group targeted it as a symbol of colonial arrogance. It matters for UPSC as the setting of one of the most celebrated acts of women in the freedom struggle, the 1932 armed raid led by Preetilata Waddedar.

Example: the 'Dogs and Indians not allowed' signboard at its gate

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Pahartali European Club in 1932

The Pahartali European Club in 1932 refers to the armed raid on the club led by Preetilata Waddedar on 23 September 1932, on the orders of Surya Sen. The revolutionaries torched the racially exclusive club, and Waddedar, wounded and cornered, consumed cyanide rather than be captured. For UPSC it is a landmark event of the revolutionary nationalist phase and of women's participation in the freedom struggle.

Example: Preetilata Waddedar's raid on 23 September 1932

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Paibos

Paibos is the Persian court custom of kissing the monarch's feet, introduced into the Delhi Sultanate by Ghiyasuddin Balban along with sijda (prostration). These Iranian-origin rituals were meant to exalt the Sultan's divinity and distance him from nobles. For UPSC it is a classic prelims term on Balban's theory of kingship (1266 to 1287), illustrating how the Sultanate borrowed Persian ideas of absolute monarchy.

Example: introduced by Sultan Ghiyasuddin Balban (reigned 1266-1287)

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paideia

Paideia is the ancient Greek ideal of education as the formation of the whole citizen, body, character and mind, rather than mere instruction. It gives the essayist a classical Western counterpart to vidya for arguing that education should shape persons, not just fill syllabi. It is the root of the liberal-arts tradition.

Example: The Greek paideia ideal of educating the complete citizen.

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paik

A paik was an able-bodied adult male, roughly aged 16 to 50, in the Ahom kingdom of Assam who owed personal service to the state, military or labour, in exchange for cultivable land. Paiks were organised in groups called gots under officers like the bora and saikia. For UPSC, the paik system is GS-1 medieval Assam history and a classic prelims question on non-monetary revenue systems.

Example: the paik system systematised under Pratap Singha by his minister Momai Tamuli Barbarua

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Paik system

The Paik system was the military and labour organisation of the Ahom kingdom of Assam. Every able-bodied adult male was registered as a paik and served the state in rotation, grouped under officers called phukans and organised into khels. The system supplied soldiers, built embankments and roads, and underpinned Ahom resistance to the Mughals. It matters for UPSC as a distinctive medieval Indian state institution asked in prelims on the Ahoms.

Example: the Ahom kingdom of Assam

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Paika rebellion

The Paika rebellion is the 1817 armed uprising in Odisha led by Bakshi Jagabandhu Bidyadhar, the hereditary commander of the Khurda king's militia, against the East India Company's land-revenue settlements and its salt monopoly. It drew in peasants, tribals and the traditional Paika soldiery before being suppressed. For UPSC it matters in debates over whether 1857 alone counts as the first war of independence, with Odisha seeking that status for 1817.

Example: The Union and Odisha governments marked the rebellion's bicentenary in 2017 with national commemorations of Bakshi Jagabandhu.

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Paikas

Paikas is the term for the traditional foot soldiers of the Gajapati rulers of Odisha, who held rent-free land in return for military service. When the British curtailed their privileges, the Paikas rose under Bakshi Jagabandhu in the Paika Rebellion of 1817. For UPSC the Paikas are important as leaders of one of the earliest organised anti-British uprisings, often cited in debates on the First War of Independence.

Example: the Paika Rebellion of 1817 under Bakshi Jagabandhu in Odisha

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Pakistan Resolution

The Pakistan Resolution is the resolution passed by the Muslim League at its Lahore session on 23 March 1940, demanding independent states for Muslims in the north-western and eastern zones of India. Moved by A. K. Fazlul Huq, it became the League's official goal and the ideological basis of Pakistan. For UPSC it is pivotal for GS-1 modern history: the moment the demand for Partition crystallised.

Example: passed at the Muslim League's Lahore session on 23 March 1940

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Pala school

The Pala school is the style of Buddhist art that flourished in Bengal and Bihar under the Pala kings from the 8th to the 12th century CE. Known for graceful bronze sculptures and illustrated palm-leaf manuscripts produced at Nalanda and Vikramashila, it carried Mahayana and Vajrayana themes across the Himalayas. It matters for UPSC as the bridge between Indian Buddhist art and the art of Nepal and Tibet, and a standard art-and-culture prelims topic.

Example: the illustrated palm-leaf manuscripts of Nalanda and Vikramashila

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Pala style

Pala style is the distinctive idiom of Buddhist and Hindu art that flourished under the Pala dynasty of Bengal and Bihar from the 8th to the 12th century. It is known for elegant bronze sculptures, stone carving and illuminated palm-leaf manuscripts produced at Nalanda and Vikramashila. For UPSC it is a key art-and-culture topic marking the last great phase of Buddhist art in India before its decline.

Example: bronze Buddhist images from Nalanda (9th-12th century)

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Palaeolithic

Palaeolithic is the Old Stone Age, the earliest phase of human prehistory when people were hunter-gatherers using chipped stone tools. In India it is divided into Lower, Middle and Upper phases, with sites like Bhimbetka showing early rock art. For UPSC it anchors GS-1 ancient history: tool typology, sites such as Attirampakkam, and the transition to the Mesolithic and Neolithic.

Example: the Bhimbetka rock shelters in Madhya Pradesh

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Palai

Palai is one of the five tinai landscapes of classical Sangam Tamil literature, denoting the arid, waterless tract associated with separation, hardship and the goddess Korravai. The fivefold landscape scheme (kurinji, mullai, marudam, neydal, palai) maps ecology to human emotion. For UPSC it appears in GS-1 ancient history and art-and-culture questions on Sangam literature and early Tamil society.

Example: the five-tinai classification of Sangam poetry

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Palas

The Palas is the Buddhist dynasty that ruled Bengal and Bihar from the 8th to the 12th century, founded by Gopala around 750 CE. Under Dharmapala and Devapala it became a major power patronising Nalanda and Vikramashila and spreading Mahayana Buddhism to Tibet and Southeast Asia. For UPSC the Palas are central to medieval history: tripartite struggle, Buddhist art, and monastic universities.

Example: Vikramashila monastery, founded by Dharmapala

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paleomagnetism

Paleomagnetism is the study of the Earth's past magnetic field as recorded in rocks, especially the alignment of magnetic minerals in lavas and sediments at the time they formed. Magnetic reversals preserved in ocean-floor basalts were key evidence for seafloor spreading and plate tectonics. For UPSC, it belongs to GS-1 physical geography on continental drift and plate tectonics, and to GS-3 science basics.

Example: the symmetric magnetic stripes on either side of the Mid-Atlantic Ridge

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Palghat (Palakkad) Gap

The Palghat (Palakkad) Gap is a low mountain pass through the Western Ghats in Kerala, about 24 to 30 km wide, connecting Coimbatore in Tamil Nadu with Palakkad in Kerala. It channels the southwest monsoon into interior Tamil Nadu and carries major rail and road links. For UPSC it is a classic prelims geography feature of the Western Ghats, often asked alongside the Thal, Bhor and Senkotta gaps.

Example: the Coimbatore-Palakkad rail and road corridor through the Western Ghats

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Pali

Pali is the Middle Indo-Aryan language in which the Theravada Buddhist canon is preserved, closely related to the dialects of the Buddha's time. Though no longer spoken natively, it remains a liturgical language across Sri Lanka, Myanmar, Thailand and Laos. For UPSC it matters for GS-1 ancient history and art-and-culture: the language of the Tipitaka, Ashokan-era transmission of Buddhism, and classical language debates.

Example: the Tipitaka, the Theravada Buddhist canon, composed in Pali

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Pali and Prakrit have no living native speakers

This is the linguistic fact that Pali and Prakrit, the Middle Indo-Aryan languages of ancient India, survive only as classical and liturgical languages with no living native speakers. Pali endures in Theravada Buddhism; Prakrits were the vernaculars of Jain canons and Ashokan edicts. For UPSC it frames questions on classical languages, language endangerment, and why Sanskrit, Tamil and Pali differ in official status.

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Pali Canon (Tipitaka)

The Pali Canon is the complete collection of Theravada Buddhist scriptures, also called the Tipitaka, meaning the three baskets. It comprises the Vinaya Pitaka (monastic discipline), the Sutta Pitaka (the Buddha's discourses) and the Abhidhamma Pitaka (philosophical analysis). For UPSC it is the foundational primary source for early Buddhism in GS-1, linked to the Buddhist councils that compiled it.

Example: the Vinaya, Sutta and Abhidhamma Pitakas

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Palitana

Palitana is the great Jain pilgrimage centre in Gujarat, a cluster of nearly 900 marble temples atop Shatrunjaya hill dedicated chiefly to Rishabhanatha (Adinath), the first Tirthankara. Built mainly between the 11th and 16th centuries, it is among the holiest Shatrunjaya tirthas. For UPSC it is a standard prelims art-and-culture and tourism question on Jain sacred geography.

Example: the Shatrunjaya hill temples dedicated to Rishabhanatha (Adinath)

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Palk Strait

The Palk Strait is the narrow, shallow strait between Tamil Nadu in India and the Jaffna peninsula of Sri Lanka, named after Robert Palk of the Madras Presidency. Adam's Bridge (Ram Setu), a chain of shoals, lies at its southern end. For UPSC it matters for Indo-Sri Lanka relations, the Katchatheevu island issue, fishermen disputes, and prelims map questions.

Example: Adam's Bridge (Ram Setu), the chain of shoals at its southern end

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Palk Strait (India–Sri Lanka)

The Palk Strait between India and Sri Lanka is the narrow sea channel separating Tamil Nadu from northern Sri Lanka, dotted with islands such as Katchatheevu. It is central to the long-running fishermen dispute, with Indian boats crossing into Sri Lankan waters and frequent arrests. For UPSC it links GS-2 India-Sri Lanka relations, maritime boundaries under UNCLOS, and livelihood-versus-security debates.

Example: Katchatheevu island, ceded to Sri Lanka in 1974

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Palk vs Mannar

Palk vs Mannar is the geographic distinction between the Palk Strait, the narrow channel between Tamil Nadu and northern Sri Lanka, and the Gulf of Mannar, the bay to its south between India and Sri Lanka. The Gulf of Mannar hosts a UNESCO biosphere reserve rich in coral reefs and dugongs. For UPSC the pair is a classic prelims map trap testing straits, biosphere reserves and the Sethusamudram project.

Example: the Gulf of Mannar Biosphere Reserve

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Pallavas

The Pallavas is the dynasty that ruled the Tamil country from Kanchipuram between roughly the 3rd and 9th centuries CE. Under Mahendravarman I and Narasimhavarman I they pioneered Dravidian rock-cut architecture, culminating in the Shore Temple at Mahabalipuram, a UNESCO site. For UPSC they are essential for ancient south Indian history, temple architecture evolution, and the Chalukya-Pallava conflicts.

Example: the Shore Temple at Mahabalipuram (UNESCO World Heritage Site)

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Palma ratio

The Palma ratio is a measure of income inequality calculated by dividing the income share of the richest 10 percent of a population by the share of the poorest 40 percent. Proposed by Chilean economist Gabriel Palma, it focuses on the extremes of distribution where inequality is most politically salient. For UPSC it is a GS-3 economics term contrasting with the Gini coefficient in questions on inequality, inclusive growth and welfare policy.

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Pampa

Pampa is Adikavi Pampa, the 10th-century Kannada poet regarded as the first great poet (adikavi) of Kannada literature. A court poet of the Vemulavada Chalukyas, he composed the Adipurana, a Jain work, and the Vikramarjuna Vijaya (Pampa Bharata), a Kannada retelling of the Mahabharata. For UPSC he is a standard art-and-culture name in questions on regional literatures and the Jain literary tradition.

Example: Vikramarjuna Vijaya (Pampa Bharata), composed in 941 CE

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pan-Indian consciousness

Pan-Indian consciousness is a shared sense of belonging to one Indian nation that transcends region, language, caste and religion. Historians debate its origins, tracing it through the freedom struggle, railways, print and anti-colonial movements. For UPSC, it is central to GS-1 on nationalism, communalism and regionalism, and to essay questions on unity in diversity.

Example: the nationwide response to the Jallianwala Bagh massacre of 1919

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Panama Canal, completed in 1914

The Panama Canal is the 82-km artificial waterway across the Isthmus of Panama linking the Atlantic and Pacific Oceans, completed in 1914. Built by the United States after the French effort failed, it slashed shipping distances between the two oceans. For UPSC it is a staple prelims geography topic on canals and straits, and appears in GS-2/GS-3 answers on global trade chokepoints and maritime logistics.

Example: opened to shipping on 15 August 1914

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Panama Papers

The Prevention of Money Laundering Act, 2002 is India's core anti-money-laundering statute, criminalising the laundering of proceeds of scheduled offences. It empowers the Enforcement Directorate to attach, search, seize and arrest. The Supreme Court upheld its wide powers in the 2022 Vijay Madanlal judgment. It matters as the backbone of India's financial-crime enforcement.

Example: ED attachments of laundered assets under PMLA

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Pancha Rathas

The Pancha Rathas are five monolithic rock-cut temples at Mahabalipuram (Mamallapuram) in Tamil Nadu, carved in the seventh century CE under the Pallava king Narasimhavarman I. Each ratha is cut from a single granite boulder and named after the Pandavas and Draupadi, displaying the embryonic forms of Dravidian vimanas. They matter for UPSC as the transitional link between rock-cut caves and structural temples in South Indian architecture.

Example: The Dharmaraja ratha's tower prefigures the vimana of later Chola temples like Brihadeeswara.

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Panchala

Panchala is the ancient mahajanapada of the upper Ganga-Yamuna doab, with capitals at Ahichhatra and Kampilya. In the Mahabharata, Draupadi was a Panchala princess and Drupada its king; in the later Vedic period the Kuru-Panchala alliance shaped early state formation. For UPSC it is a standard GS-1 ancient history topic on the sixteen mahajanapadas and Vedic polity.

Example: Draupadi, the Panchala princess of the Mahabharata

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panchamahabhuta

The panchamahabhuta are the five great elements, earth (prithvi), water (ap), fire (tejas), air (vayu) and ether (akasha), of classical Indian philosophy, notably Samkhya and Ayurveda. They are held to compose all matter, including the human body, and underpin Ayurvedic diagnosis and treatment. For UPSC, they belong to GS-1 on ancient Indian philosophy, and to GS-2 on AYUSH and traditional medicine.

Example: the tridosha theory of Ayurveda, built on the five elements

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PANCHAMRIT

Panchamrit is India's five-point climate action pledge announced by Prime Minister Narendra Modi at COP26 in Glasgow in 2021. Its elements are 500 GW of non-fossil capacity by 2030, 50 percent of energy from renewables by 2030, one billion tonnes of projected emissions cut by 2030, 45 percent lower carbon intensity from 2005 levels, and net zero by 2070. For UPSC, it is the centrepiece of environment and climate questions.

Example: Announced at COP26, Glasgow, 1 November 2021

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Panchamrit (COP26, Glasgow 2021)

Panchamrit (COP26, Glasgow 2021) is India's five-point climate pledge announced at the Glasgow summit: 500 GW non-fossil capacity by 2030, 50 percent renewable electricity, 1 billion tonnes emission cuts, 45 percent emissions-intensity reduction, and net zero by 2070. It is India's signature climate commitment. The essay uses it as the developing world's serious-offer exhibit.

Example: India's five climate commitments from COP26, culminating in net zero by 2070.

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Panchatantra

The Panchatantra is the Sanskrit collection of animal fables attributed to Vishnu Sharma, composed in the early centuries of the Common Era. Its five books use witty stories of jackals, lions, and crows to teach statecraft and practical wisdom to princes. Translated into Persian, Arabic, and European languages, it is among the most widely translated Indian texts. It matters for UPSC as a landmark of ancient Indian literature and political thought.

Example: Vishnu Sharma's five-book fable collection

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Panchayat Extension to Scheduled Areas Act, 1996 (PESA)

The Panchayat Extension to Scheduled Areas Act, 1996 extends panchayat self-governance to Fifth Schedule tribal areas, giving gram sabhas control over land, minor forest produce, minor minerals and dispute resolution. Poor implementation is a standing grievance in LWE debates. It matters because genuine tribal self-governance would undercut the Maoist claim that the state denies tribals power.

Example: Gram sabha powers over minor forest produce under PESA

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Panchayati Raj

Panchayati Raj is India's system of rural local self-government, constitutionally established by the 73rd Constitutional Amendment Act of 1992. It creates a three-tier structure of gram panchayat, panchayat samiti and zila parishad with reservations for women, SCs and STs. For UPSC it is the cornerstone of GS-2 polity: democratic decentralisation, local governance, and flagship schemes delivered through panchayats.

Example: the 73rd Constitutional Amendment Act, 1992

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Panchayati Raj Institutions

Panchayati Raj Institutions are the constitutionally mandated rural local governments (village, block and district panchayats) under the 73rd Amendment. They are the first responders and implementers of disaster management at the grassroots.

Example: panchayats prepare village disaster management plans and maintain volunteer teams

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Panchayats (Extension to Scheduled Areas) Act, 1996

The Panchayats (Extension to Scheduled Areas) Act, 1996 extends the panchayat system of Part IX to Fifth Schedule areas with suitable modifications. It vests the Gram Sabha with powers over minor forest produce, land alienation, village markets, and approval of development plans. For UPSC it is the key statute linking tribal self-governance, the Forest Rights Act, and decentralisation.

Example: A Gram Sabha's mandatory consent before land acquisition in a Scheduled Area.

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Panchayats (Extension to Scheduled Areas) Act, 1996 (PESA)

PESA is the Panchayats (Extension to Scheduled Areas) Act, 1996, which extends the 73rd Amendment's panchayat provisions to Fifth Schedule tribal areas with modifications. It empowers gram sabhas over land, forests, minor minerals and customary dispute resolution, giving tribal communities self-governance. For UPSC it is vital for GS-2 and GS-3: tribal rights, forest governance, and conflicts over land acquisition and mining.

Example: enacted on 24 December 1996 for Fifth Schedule areas

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Panchsheel

Panchsheel is the Five Principles of Peaceful Coexistence signed by India and China on 29 April 1954 as part of their agreement on trade with the Tibet region. The principles are mutual respect for sovereignty, non-aggression, non-interference, equality and peaceful coexistence. Echoed at the 1955 Bandung Conference, they became the moral vocabulary of the Non-Aligned Movement. For UPSC, Panchsheel is the GS-2 touchstone for India-China relations and peaceful-coexistence doctrine.

Example: The 29 April 1954 Agreement on Trade and Intercourse between the Tibet region of China and India, whose preamble enshrined the five principles.

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Panchsheel Agreement

The Panchsheel Agreement is the 1954 agreement between India and China on trade and intercourse between the Tibet region of China and India, signed on 29 April 1954 by Zhou Enlai and Jawaharlal Nehru's governments. It enshrined the Five Principles of Peaceful Coexistence: mutual respect for sovereignty, non-aggression, non-interference, equality and peaceful coexistence. For UPSC it anchors GS-2 India-China relations and the 1962 war's origins.

Example: signed on 29 April 1954 between India and China (the Tibet trade agreement)

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Panchtatva

Panchtatva is the Indian philosophical doctrine of the five great elements, akasha (space), vayu (air), agni (fire), jala (water) and prithvi (earth), from which all matter is composed. Samkhya, Yoga and Ayurveda use it to explain the body, the senses and natural phenomena. For UPSC it is a recurring prelims anchor in ancient Indian philosophy, art and culture, and science questions.

Example: the five mahabhutas of Samkhya philosophy

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pandemic

A pandemic is an epidemic that has spread across countries or continents, affecting large numbers of people worldwide.

Example: COVID-19 was declared a pandemic by WHO on 11 March 2020

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Pandita Ramabai

Pandita Ramabai (1858-1922) is the pioneering Indian social reformer who championed women's education and widow welfare in colonial India. The first Indian woman to receive the title Pandita, she founded Sharada Sadan in Mumbai (1889) and the Mukti Mission at Kedgaon near Pune for widows and destitute women. For UPSC she is central to mains answers on 19th-century social reform and the women's question.

Example: Sharada Sadan, Mumbai, founded 1889

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Pandurang Hegde

Pandurang Hegde is the environmental activist who led the Appiko movement of Karnataka, launched in September 1983 in Uttara Kannada district. Villagers hugged trees (appiko means 'to hug' in Kannada) to stop contractors felling forests of the Western Ghats, inspired by the Chipko movement. For UPSC he is a standard prelims name in environmental movements, and useful in mains answers on grassroots conservation and sustainable development.

Example: Appiko movement, Sirsi (Uttara Kannada), September 1983

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Pandya

A Pandya is a king of the Pandya dynasty, one of the three crowned Tamil kingdoms (muvendar) of the Sangam age alongside the Cholas and Cheras, ruling from Madurai in the far south. Sangam literature celebrates Pandya patrons of Tamil letters and their trade with Rome. For UPSC the term appears in prelims questions on Sangam polity, and distinguishing the dynasty's early and medieval phases sharpens ancient-history answers.

Example: Madurai, the Pandya capital

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Pandya phase

The Pandya phase is the period of Pandya dominance in Tamil history, from the Sangam-age kingdom centred on Madurai to the medieval revival of the 13th century under rulers like Maravarman Sundara. It is noted for maritime trade, Tamil literature, and grand temple architecture, including towering gopurams. It matters for UPSC as part of the south Indian kingdoms syllabus, where dynastic chronology and temple styles are frequent prelims questions.

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Pandyas

The Pandyas are the Tamil dynasty that ruled the far south from Madurai, first as a Sangam-age power trading with Rome and later revived in the medieval period (6th-14th century) under rulers like Maravarman Sundara I. They patronised Tamil literature and temple architecture, including expansions at Madurai. For UPSC they are core prelims material on south Indian dynasties, Sangam literature and temple styles.

Example: the Meenakshi temple complex at Madurai, expanded under Pandya patronage

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Pangong Tso

Pangong Tso is a high-altitude endorheic lake in eastern Ladakh, about 134 km long, stretching from India into Tibet with roughly one-third in Indian territory. Its northern and southern banks lie along the disputed Line of Actual Control with China. For UPSC it is essential for prelims map work and mains answers on India-China border management, the 2020 standoff and confidence-building measures.

Example: the May 2020 India-China standoff at the lake's Finger area and south bank

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Panini's Ashtadhyayi

Panini's Ashtadhyayi is the foundational Sanskrit grammar composed by the grammarian Panini around the 4th century BCE. Its eight chapters contain nearly 4,000 sutras that generate correct Sanskrit forms through an algebraic, rule-based system, often compared to modern generative linguistics. For UPSC it anchors prelims questions on ancient Indian scholarship, and illustrates India's scientific tradition in mains culture answers.

Example: the fourteen Shiva-sutras (Maheshvara sutras) that open the work

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Panipat 1526

Panipat 1526 is the First Battle of Panipat, fought on 21 April 1526, in which Babur's smaller army defeated the Delhi Sultan Ibrahim Lodi using field artillery and the tulughma flanking tactic. The victory ended the Delhi Sultanate and established Mughal rule in India. For UPSC it is a high-yield prelims date-battle pair, and a mains example of technology and tactics deciding medieval Indian warfare.

Example: Babur's artillery commander Ustad Ali Quli at Panipat

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panopticon

The panopticon is Jeremy Bentham's design for a prison in which inmates can be watched at any moment without knowing when, and Michel Foucault's master metaphor for modern disciplinary power. The watched internalise the watcher, so power works without constant force. It is the essayist's image for surveillance, self-censorship and the digital age.

Example: Foucault's use of Bentham's panopticon in Discipline and Punish (1975) to describe modern power.

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Panyadhyaksha

Panyadhyaksha is the superintendent of commerce in Kautilya's Arthashastra, the Mauryan-era treatise on statecraft. He regulated trade and markets, fixed prices of essential goods, prevented adulteration, and sold goods produced by state-run enterprises. For UPSC he is a classic prelims match-the-following name from Mauryan administration, and a mains illustration of the ancient Indian state's intervention in the economy.

Example: Arthashastra, Book II, alongside the Sitadhyaksha and Sulkadhyaksha

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Papanatha

Papanatha is a mid-8th century Shiva temple in the Pattadakal complex of Karnataka, built under the Early Chalukyas and now part of the UNESCO Group of Monuments at Pattadakal (1987). Its significance lies in its experimental fusion of styles: a Nagara (northern) curvilinear tower over a plan with Dravida features, built in three stages. For UPSC it is the key example of Vesara experimentation, the Chalukyan blending of northern and southern temple architecture.

Example: Within the Pattadakal World Heritage complex, Papanatha stands out as the largest temple in the rekha-nagara (northern) style alongside the Dravida Virupaksha temple.

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paper-making

Paper-making is the craft and industry of producing paper from pulped plant fibres, invented in China around 105 CE under Cai Lun and reaching India through Central Asian and later Sultanate-era routes. It transformed administration, literature and education. For UPSC, it serves GS-1 on medieval history, technology transfer and manuscript culture, and GS-3 on the paper industry and its environmental concerns.

Example: Cai Lun's paper of Han-dynasty China, c. 105 CE

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Paradigm

A paradigm is a dominant framework of ideas, assumptions and methods that shapes how a field understands and solves problems, until a 'paradigm shift' replaces it. In UPSC preparation the word appears in governance, ethics and essay contexts, for example the shift from government to governance or from welfare to rights-based administration. It signals a change in the whole model of thinking, not just a policy tweak.

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paradiplomacy

Paradiplomacy is the conduct of international relations by sub-national governments, such as Indian states signing investment or cultural agreements abroad, distinct from the Union government's formal foreign policy. It has grown with economic liberalisation and competitive federalism. For UPSC, it is a GS-2 international-relations concept, linked to federalism and state investment summits.

Example: the Vibrant Gujarat summits drawing foreign investors to the state

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PARAKH

PARAKH (Performance Assessment, Review and Analysis of Knowledge for Holistic Development) is the national assessment body set up under NCERT as mandated by the National Education Policy 2020. It standardises school assessments across states, sets norms for examinations, and conducts large-scale learning-outcome surveys. It is the institutional backbone of competency-based evaluation under NEP 2020.

Example: PARAKH now runs the national learning survey that replaced the old National Achievement Survey.

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PARAKH Rashtriya Sarvekshan

The PARAKH Rashtriya Sarvekshan is India's national school-learning survey, conducted by NCERT's National Assessment Centre-PARAKH. The 2024 edition, held on 4 December 2024, assessed about 21 lakh students of Grades 3, 6 and 9 across some 74,000 schools in 781 districts, replacing the earlier National Achievement Survey. It provides the baseline for competency-based learning under NEP 2020 and feeds national, state and district report cards.

Example: Its 2024 findings placed Punjab, Kerala and Himachal Pradesh among the top-performing states in school education.

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parallel governments

Parallel governments were alternative administrations set up by Indians during the Quit India Movement of 1942 in areas where British authority collapsed, running courts, policing and revenue collection. The most famous arose at Ballia, Tamluk with its Jatiya Sarkar, and Satara with its Prati Sarkar. For UPSC, they are GS-1 modern-history material on the 1942 uprising and popular sovereignty.

Example: the Prati Sarkar of Satara led by Nana Patil

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PARAM 8000

PARAM 8000 is India's first indigenously built supercomputer, unveiled by C-DAC Pune in 1991 with a peak speed of 1 gigaflop. It was developed after the United States denied India a Cray supercomputer, using a parallel-processing (MIMD) design with Inmos transputers, and was benchmarked second only to a US machine at the 1990 Zurich supercomputing show. For UPSC it is the landmark case of technology denial driving indigenous self-reliance.

Example: The US refusal to sell a Cray X-MP to India over dual-use concerns directly triggered the C-DAC mission that produced PARAM 8000.

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PARAM Siddhi-AI

India's largest high-performance computing and AI supercomputer, built by the Centre for Development of Advanced Computing (C-DAC) under the National Supercomputing Mission with integration support from Atos, and commissioned in 2020. Ranked around 63rd in the TOP500 list, it delivers about 4.6 sustained petaflops and 210 AI petaflops, and is dedicated to AI research for academia, start-ups, MSMEs and industry. It is named in the PARAM series that began in the 1990s.

Example: Researchers used PARAM Siddhi-AI for COVID-era simulations, medical imaging analysis and genome sequencing workloads.

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Paramabhattaraka

Paramabhattaraka is a Sanskrit imperial title meaning 'supreme lord', used by early medieval Indian kings together with Maharajadhiraja and Paramesvara to proclaim paramount sovereignty over subordinate rulers. It marks the highest rung of the era's royal titulature. For UPSC it is a favourite prelims title-matching term, helping decode the political claims embedded in inscriptions and copper-plate grants.

Example: the full imperial style 'Paramesvara Paramabhattaraka Maharajadhiraja' adopted by the Pala ruler Dharmapala

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Paramaras

The Paramaras are the Rajput dynasty that ruled Malwa in central India from Dhar between the 9th and 14th centuries. Their greatest king, Bhoja (c. 1010-1055), was famed as a scholar-patron of literature, astronomy and temple building, and a rival of the Chalukyas and Kalachuris. For UPSC they are standard prelims material on early medieval dynasties, and Bhoja is a mains example of the scholar-king ideal.

Example: the Bhojeshwar temple at Bhojpur, built under Raja Bhoja

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Parameshwara

Parameshwara is a Sanskrit title meaning 'supreme lord', formed from parama (supreme) and ishvara (lord), and is also one of the names of Shiva. Indian and Southeast Asian rulers adopted it to signal supreme kingship and divine sanction. For UPSC it matters for prelims questions on royal titles and the Sanskrit vocabulary of kingship found in inscriptions across India and Southeast Asia.

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Paramesvara

Paramesvara is the imperial title, meaning 'supreme lord', adopted by Dharmapala, the second Pala ruler of Bengal (c. 770-810 CE), as part of the full style 'Paramesvara Paramabhattaraka Maharajadhiraja'. It proclaimed his claim to paramount power during the tripartite struggle with the Gurjara-Pratiharas and Rashtrakutas. For UPSC it is a classic prelims title-to-ruler match, anchoring the Pala dynasty in early medieval polity.

Example: Dharmapala, Pala ruler of Bengal, son and successor of Gopala

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Parameswara

Parameswara is the prince credited in Portuguese and Chinese accounts with founding the Malacca Sultanate in the early 15th century, after fleeing Palembang and Singapore. Malacca's harbour on the Strait of Malacca made it the great entrepot between India and China, and its rulers converted to Islam. For UPSC he links medieval Indian Ocean trade, the spread of Islam in Southeast Asia, and India's maritime history.

Example: his 1411 visit to the Ming court with Admiral Zheng He

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paramountcy

Paramountcy was the doctrine that the British Crown was the supreme authority over the Indian princely states, controlling their external affairs and intervening in their internal administration. It lapsed with independence on 15 August 1947, leaving the states theoretically free to join India or Pakistan. For UPSC it is key to the integration of the princely states.

Example: After paramountcy lapsed, Hyderabad's reluctant ruler was integrated through the 1948 police action, Operation Polo.

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paramountcy over the princely states

Paramountcy was the doctrine by which the British Crown claimed supreme and undefined authority over India's princely states, controlling their external affairs, defence and succession while leaving internal administration to the rulers. It was exercised through residents and political agents. For UPSC, it is GS-1 and GS-2 material on British paramountcy, the Butler Committee of 1927, and the integration of the states after 1947.

Example: the Butler Committee of 1927 on the relationship between the Crown and the princes

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Parantaka I

Parantaka I is the Chola king who reigned from 907 to 955 CE and raised the Cholas to imperial power. He conquered Madurai, taking the title 'Maduraiyum Ilamum Konda', campaigned in Sri Lanka, and strengthened village self-government recorded in the Uthiramerur inscriptions. His reign ended in eclipse after the defeat at Takkolam (949). For UPSC he anchors prelims questions on Chola administration and the Rashtrakuta-Chola rivalry.

Example: the Uthiramerur inscriptions of his reign detailing village assembly elections

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Parantaka I at Takkolam

Parantaka I at Takkolam refers to the Battle of Takkolam (948-949 CE), the climax of the Chola-Rashtrakuta struggle for south India fought during Parantaka I's reign. The Chola army, led by his eldest son and crown prince Rajaditya, was defeated by the Rashtrakuta king Krishna III, and Rajaditya was killed on the field. For UPSC it is a staple prelims battle pairing and a mains turning point explaining the temporary Chola eclipse before Rajaraja I.

Example: the death of crown prince Rajaditya on the battlefield in 949

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parasitic chain of intermediaries

A parasitic chain of intermediaries is a long line of middlemen between producers and consumers, each taking a margin without adding value, so farmers receive low prices while consumers pay high ones. It is a standard critique of India's APMC-regulated agricultural marketing. For UPSC, it anchors GS-3 on agricultural marketing, e-NAM and the farm-laws debate, and GS-2 governance questions on market reform.

Example: e-NAM, the national electronic market for farm produce launched in 2016

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parati

Parati, also called parauti, was a category of land in the Mughal revenue system of Akbar: land left fallow for a year or two to recover fertility, ranked with polaj, chachar and banjar by continuity of cultivation. When cultivated, it paid revenue at the full polaj rate. For UPSC, it is GS-1 medieval-history material on Todar Mal's zabti system and a recurring prelims question.

Example: the Ain-i-Akbari's description of the fourfold land classification

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parganas

Parganas were sub-district administrative and revenue units in medieval and early-modern India, each comprising a cluster of villages under Mughal and later Maratha and British rule. They were the working level of land-revenue assessment and local control. For UPSC, they belong to GS-1 on Mughal and Maratha administration, and to GS-2 on the evolution of district administration.

Example: the pargana as the unit below the sarkar in Akbar's administration

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Paris Agreement

The Paris Agreement is the 2015 global climate treaty adopted at COP21 under the UNFCCC, committing countries to hold warming well below 2 degrees C above pre-industrial levels and pursue 1.5 degrees C. Unlike Kyoto, it binds all parties through self-set Nationally Determined Contributions reviewed every five years. For UPSC it is core prelims and mains GS-3 material on climate governance, equity, and India's energy transition.

Example: India's Panchamrit pledges announced at COP26 in Glasgow (2021), including net zero by 2070

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Paris Commune

The Paris Commune is the revolutionary government that ruled Paris from 18 March to 28 May 1871 after France's defeat in the Franco-Prussian War. Run by workers' councils, it decreed measures like separation of church and state and workers' management of abandoned factories, before being crushed by the French army in the 'Bloody Week'. For UPSC it matters as the first attempt at proletarian self-government, famously analysed by Marx and invoked in debates on decentralised democracy.

Example: Karl Marx's 'The Civil War in France' (1871) treated the Commune as the first working-class seizure of political power.

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PARIVESH

Pro-Active and Responsive facilitation by Interactive and Virtuous Environmental Single-window Hub, the Environment Ministry's web-based single-window system launched in 2018 for processing environmental, forest, wildlife and coastal regulation zone clearances. It digitises the entire environmental impact assessment and clearance workflow, from terms of reference to appraisal and compliance monitoring, making timelines transparent and trackable. It was designed to cut delays while keeping the clearance process accountable.

Example: A mining or highway project applies for environmental clearance through PARIVESH, which tracks its proposal through appraisal committees and public hearing stages online.

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PARIVESH 2.0

The upgraded version of the PARIVESH portal that integrates environmental clearances with GIS-based decision support, allowing a project's location to be checked against eco-sensitive zones, forests and protected areas before proposals are formally filed. It aims to shorten clearance timelines further and strengthen compliance through digital monitoring and data analytics. The GIS layer is the defining addition over the original portal.

Example: Under PARIVESH 2.0, a project proponent can screen a site's proximity to protected areas on a GIS map at the application stage itself, avoiding doomed proposals.

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Parker Solar Probe

NASA's Parker Solar Probe, launched in August 2018, is the first spacecraft to fly through the Sun's outer atmosphere, the corona, studying the solar wind and space weather at their source. Named after the living physicist Eugene Parker, it became the fastest human-made object ever built at about 690,000 km per hour, and its carbon-foam heat shield let it survive a closest approach of about 6.1 million km from the Sun's surface.

Example: On 24 December 2024 Parker Solar Probe passed within 3.8 million miles of the visible Sun, closer than any human-made object before it, and phoned home a beacon tone two days later to confirm it had survived.

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Parliament of Religions in Chicago in 1893

The Parliament of Religions in Chicago in 1893 is the World's Parliament of Religions held alongside the Columbian Exposition, the first major interfaith gathering of its kind. Swami Vivekananda's address opening with 'Sisters and brothers of America' won a standing ovation and introduced Hinduism and Vedanta to the West. For UPSC it is a landmark prelims event in the national movement's cultural phase and a mains example of India's soft power and religious universalism.

Example: Vivekananda's address on 11 September 1893

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Parliamentary approval

Parliamentary approval is the constitutional requirement that certain executive actions take effect only after ratification by Parliament, ensuring legislative oversight of the executive. Examples include ordinances, emergency proclamations and delegated legislation laid before the Houses. For UPSC it is a recurring prelims and mains theme in Indian polity, testing how parliamentary control checks executive power under Articles 123, 352 and 356.

Example: a proclamation of President's Rule under Article 356 lapses unless approved by Parliament within two months

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Parliamentary Committee

A Parliamentary Committee is a small body of MPs constituted to examine bills, budgets, and policies in detail that the full House cannot. Standing committees include the 24 Department-related Standing Committees and the financial committees on Public Accounts, Estimates, and Public Undertakings; ad hoc committees include Select and Joint Committees on specific bills. For UPSC they exemplify legislative oversight of the executive.

Example: A Joint Parliamentary Committee examining a data protection bill clause by clause.

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Parliamentary Standing Committee on Social Justice and Empowerment

The Parliamentary Standing Committee on Social Justice and Empowerment is one of the 24 Departmentally Related Standing Committees of Parliament, examining the demands for grants, bills and policies of the Ministry of Social Justice and Empowerment. With 31 members drawn from both Houses and reconstituted annually, its reports guide welfare legislation. For UPSC it is relevant to prelims questions on parliamentary committees and mains answers on social justice and accountability.

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parochialism

Parochialism is a narrow, inward-looking attachment to one's own locality, community or group, resisting wider loyalties or universal values. In political science it contrasts with national or cosmopolitan outlooks. For UPSC, it appears in GS-1 on regionalism and communalism, and in GS-4 on ethical concepts such as impartiality and tolerance versus narrow group loyalty.

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Parshvanatha

Parshvanatha is the 23rd Tirthankara of Jainism, traditionally placed about 250 years before Mahavira (around the 8th-7th century BCE). He preached the chaturyama dharma, a fourfold restraint of non-violence, truth, non-stealing and non-possession, later expanded by Mahavira into five vows. For UPSC he is key prelims material on Jain tradition before Mahavira, and his nirvana site anchors questions on Jain pilgrimage geography.

Example: Sammed Shikhar (Parasnath Hills) in Jharkhand, his traditional nirvana site

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Part A

Part A is the category of states under the original Constitution, comprising the former British governors' provinces such as Madras, Bombay, Uttar Pradesh and Bihar. They were administered by a governor with an elected legislature under the 1950 scheme. For UPSC it matters for prelims questions on the 1950 constitutional map and mains answers tracing the evolution of Indian federalism before the 1956 reorganisation.

Example: Madras, a Part A state under the original Constitution

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Part A/B/C/D classification was abolished

The Part A/B/C/D classification was abolished by the States Reorganisation Act, 1956 and the Seventh Constitutional Amendment, which replaced the four categories with a uniform scheme of states and union territories. This followed the States Reorganisation Commission's report and the linguistic reorganisation of states. For UPSC it is a standard prelims fact on constitutional amendments, and a mains milestone in the making of India's federal map.

Example: the Constitution (Seventh Amendment) Act, 1956

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Part B

Part B is the category of states under the original Constitution, comprising the former princely states and unions of states such as Hyderabad, Mysore, Travancore-Cochin and Rajasthan. They were headed by a rajpramukh rather than a governor. For UPSC it is prelims material on the 1950 constitutional scheme, illustrating how princely India was integrated into the republican framework before 1956.

Example: Hyderabad, a Part B state headed by its Nizam as rajpramukh

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Part C

Part C is the category of states under the original Constitution, comprising the former chief commissioners' provinces and smaller princely units such as Delhi, Ajmer, Bhopal, Coorg and Himachal Pradesh. They were administered directly by the Centre through a chief commissioner or lieutenant-governor. For UPSC it is prelims material on the 1950 scheme and the origins of several of today's union territories.

Example: Delhi, a Part C state under the original Constitution

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Part D

Part D is the category of territories under the original Constitution, comprising the Andaman and Nicobar Islands, the only Part D territory. It was administered directly by the President through a chief commissioner. For UPSC it is a neat prelims fact completing the A/B/C/D scheme, showing how even the smallest territories were fitted into the 1950 constitutional framework before the 1956 reorganisation.

Example: the Andaman and Nicobar Islands, the sole Part D territory

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Part III

Part III of the Constitution, comprising Articles 12 to 35, guarantees the Fundamental Rights to all persons and citizens. It covers equality, freedoms, protection against exploitation, religious freedom, cultural and educational rights, and constitutional remedies. These rights are justiciable and enforceable by courts. For UPSC, Part III is the core of polity questions on rights, reasonable restrictions, and judicial review.

Example: Article 21's right to life interpreted to include privacy and dignity.

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Part IV

Part IV, Articles 36 to 51, contains the Directive Principles of State Policy: non-justiciable guidelines directing the state toward social and economic justice. They include provisions for livelihood, equal pay, free legal aid, and environmental protection. Though unenforceable in court, they guide legislation and are fundamental to governance. For UPSC they frame the rights-versus-directives debate.

Example: MGNREGA drawing spirit from the directive on the right to work.

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Part IVA

Part IVA, containing Article 51A, lists the Fundamental Duties of citizens, inserted by the 42nd Constitutional Amendment in 1976 on the Swaran Singh Committee's recommendation. The eleven duties include respecting the Constitution, protecting the environment, and developing scientific temper. They are non-justiciable but aid interpretation of rights. For UPSC they balance the Fundamental Rights narrative.

Example: The duty to safeguard public property and abjure violence.

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Part IX

Part IX, Articles 243 to 243O, establishes Panchayati Raj Institutions as rural local self-government, inserted by the 73rd Constitutional Amendment, 1992. It mandates regular elections, reservation for SCs, STs, and women, State Finance Commissions, and devolution of 29 subjects. For UPSC it is the constitutional basis of democratic decentralisation.

Example: One-third reservation for women in panchayat seats.

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Part VII

Part VII of the Constitution originally dealt with States in Part B of the First Schedule, but it was repealed by the Seventh Constitutional Amendment in 1956 when states were reorganised on linguistic lines. It now stands as a repealed Part with no operative Articles. For UPSC it shows how the Constitution's structure has evolved through amendment.

Example: The Seventh Amendment's abolition of Part A, B, C, and D state categories.

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Part VIII

Part VIII, Articles 239 to 242, governs the administration of Union Territories. It provides for administrators appointed by the President and special provisions for Delhi and Puducherry, which have legislatures under Articles 239AA and 239AB. Parliament retains overriding legislative power over UTs. For UPSC it anchors questions on Delhi's governance and Centre-UT relations.

Example: The Legislative Assembly of the National Capital Territory of Delhi under Article 239AA.

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Part XIV

Part XIV, Articles 308 to 323, deals with services under the Union and the States. It covers recruitment and conditions of service, tenure protections under Article 311, and the All-India Services; Articles 315 to 323 establish the Union and State Public Service Commissions. For UPSC it is essential for questions on bureaucracy and civil service safeguards.

Example: Article 311's protection of civil servants against arbitrary dismissal.

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Part XVIII

Part XVIII, Articles 352 to 360, contains the Emergency Provisions: national emergency, President's Rule in states, and financial emergency. It was substantially tightened by the 44th Amendment in 1978 after the 1975 Emergency, requiring written Cabinet advice and periodic parliamentary approval. For UPSC it is central to debates on federalism and civil liberties.

Example: The 1975 national emergency proclaimed on grounds of internal disturbance.

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Part XX

Part XX consists of a single Article, 368, which lays down the procedure for amending the Constitution. Amendments need a special majority, and some need ratification by half the states. The Supreme Court in Kesavananda Bharati (1973) held that Parliament cannot alter the basic structure. For UPSC it frames every amendment-related question.

Example: The 42nd Amendment passed under the Article 368 procedure.

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Part XXI

Part XXI, Articles 369 to 392, contains temporary, transitional, and special provisions, including the former Article 370 on Jammu and Kashmir and Article 371's special provisions for several states. Many of its Articles were time-bound or context-specific. For UPSC it explains asymmetric federalism in India.

Example: Article 371J's special provisions for the Hyderabad-Karnataka region.

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partial decoupling

Partial decoupling describes a situation where an economy's emissions grow more slowly than its GDP, so emission intensity (emissions per unit of GDP) falls even as absolute emissions keep rising. It contrasts with absolute decoupling, in which emissions fall while the economy grows. For developing economies, partial decoupling is often presented as evidence that growth is becoming less carbon-intensive.

Example: India's emission intensity declined substantially between 2005 and 2019 even as its total emissions continued to rise with economic growth.

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Participants

Participants are the individuals, groups or countries that take part in a process, event or institution. In UPSC contexts the word appears across polity (participants in elections and movements), governance (stakeholders in schemes), and international relations (participants in summits and treaties). Answers gain precision when the participants are named specifically rather than left as a vague collective.

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participate

Participate, in the UPSC context, usually refers to citizen participation in governance: voting, public consultations, social audits, gram sabhas and participatory budgeting. It is treated as a core democratic value and a measure of governance quality. The term belongs to GS-2 on governance, local self-government and citizen charters, and to GS-4 on participatory ethics.

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Participation

Participation is the involvement of citizens in the decisions and processes that affect them, from voting and protest to consultation in governance. The 73rd and 74th Amendments institutionalised grassroots participation through Panchayati Raj and municipalities. For UPSC mains it is a core GS-2 value: answers on democracy, decentralisation and welfare delivery routinely invoke people's participation as the test of legitimacy.

Example: the Gram Sabha, the village assembly institutionalising direct participation under the 73rd Amendment

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Particularly Vulnerable Tribal Groups

Particularly Vulnerable Tribal Groups is the official designation for the most backward sub-category of Scheduled Tribes, renamed from Primitive Tribal Groups in 2006. Seventy-five such groups are recognised across 18 states and one Union Territory, identified by pre-agricultural technology, low literacy, economic backwardness, and stagnant or declining population. For UPSC the term signals targeted welfare beyond general ST schemes.

Example: The Dongria Kondh of Odisha.

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Particulate matter

Particulate matter is the mixture of tiny solid particles and liquid droplets suspended in air, classified by size as PM10 (10 micrometres or less) and the more hazardous PM2.5 (2.5 micrometres or less), which can penetrate deep into the lungs and bloodstream. It arises from combustion, construction dust, stubble burning, industry and natural sources, and is linked to respiratory and cardiovascular disease.

Example: Delhi's winter smog is driven by PM2.5 spikes from stubble burning, vehicular emissions and stagnant weather, pushing the Air Quality Index into the severe category.

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Parties

Parties, in the UPSC context, are political parties, the organised groups that contest elections, form governments and structure democratic competition. The Election Commission recognises national and state parties under the Election Symbols (Reservation and Allotment) Order, 1968, based on vote share and seats won. For UPSC they are central to prelims questions on recognition criteria and mains answers on party system, defections and electoral reform.

Example: the national-party test of 6 percent votes in four states under the 1968 Symbols Order

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Partition

Partition, in the UPSC context, is the Partition of India in 1947, the division of British India into the independent dominions of India and Pakistan under the Mountbatten Plan of 3 June 1947. Drawn along the Radcliffe Line, it triggered one of history's largest mass migrations and communal violence. For UPSC it is foundational to prelims modern history and mains answers on communalism, refugees and India-Pakistan relations.

Example: the Radcliffe Line, announced on 17 August 1947

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Partition of Bengal

The Partition of Bengal is the 1905 division of the Bengal Presidency by Viceroy Lord Curzon, announced in July and effective 16 October 1905, ostensibly for administrative efficiency. It provoked the Swadeshi and boycott movements, united moderates and extremists in protest, and was annulled at the 1911 Delhi Durbar. For UPSC it is the landmark case of colonial divide-and-rule and the birth of organised mass nationalism.

Example: The 1905 partition directly triggered the Swadeshi movement, the boycott of British goods and the founding of national education institutions.

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Partition of Bengal on 20 July 1905

The Partition of Bengal on 20 July 1905 is the announcement by Viceroy Lord Curzon dividing Bengal into a Muslim-majority east and a Hindu-majority west, implemented on 16 October 1905. Officially for administrative convenience, it was seen as a divide-and-rule blow to Bengali nationalism. For UPSC it is the trigger of the Swadeshi and Boycott movement, a high-yield prelims date pair and a mains case study in colonial policy.

Example: the Swadeshi movement, formally launched at Calcutta's Town Hall on 7 August 1905

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partners

Partners, in the UPSC context, usually means partner countries or organisations in India's bilateral and multilateral engagements, as in strategic partners or development partners. It also covers the stakeholders in public-private partnerships. The usage belongs to GS-2 on international relations and PPP in governance, and to GS-3 on investment and technology partnerships.

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partnership based on choice and equality

Partnership based on choice and equality is an ideal-type of marriage or intimate relationship in which both partners freely choose each other and share power, domestic work and decision-making equally, without patriarchal hierarchy. It contrasts with arranged, status-driven marriage. In UPSC GS-1 (society), it frames questions on changing family norms, women's autonomy and modern conjugal ideals in India.

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Pashupati seal

The Pashupati seal is the famous steatite seal from Mohenjo-daro showing a horned, three-faced figure seated in a yogic posture and surrounded by animals including an elephant, tiger, rhinoceros and buffalo. John Marshall identified it as a proto-Shiva, 'Pashupati', lord of animals. For UPSC it is the signature prelims artefact of Harappan religion and a mains talking point on continuity in Indian religious traditions.

Example: the seal excavated at Mohenjo-daro

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passive euthanasia

Passive euthanasia is the withholding or withdrawal of life-sustaining treatment such as a ventilator or artificial nutrition from a terminally ill patient, allowing death by natural causes, as distinct from active killing. India permits it through living wills under Supreme Court guidelines. For UPSC GS-2 and GS-4 it anchors debates on the right to die with dignity versus the sanctity of life.

Example: Common Cause v. Union of India (2018), in which the Supreme Court legalised passive euthanasia and recognised advance medical directives

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passive resistance

Passive resistance is opposition to authority through non-violent, non-cooperative means such as boycott, non-cooperation and civil disobedience, without using physical force. Gandhi distinguished his satyagraha from it as a more positive, truth-seeking force. In UPSC GS-1 it describes the methods of the Swadeshi and early national movements against colonial rule.

Example: Aurobindo Ghosh's advocacy of passive resistance (boycott, swadeshi, national education) during the 1905-08 anti-partition agitation

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passive-only AMCs

Passive-only AMCs are asset management companies that run only passive schemes such as index funds and ETFs, covered by SEBI's lighter MF Lite framework (2024). Because index tracking needs little fund-manager discretion, SEBI relaxed net worth, track record and compliance norms for them. For UPSC GS-3 (economy, financial markets) it illustrates proportionate regulation and deepening of retail investment.

Example: Navi Mutual Fund, the only passive-only AMC operating when SEBI proposed the MF Lite framework

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Passport (Entry into India) Act, 1920

The Passport (Entry into India) Act, 1920 is the colonial-era law that empowers the Central Government to require passports for persons entering India and to punish entry without valid travel documents. Enacted in 1920 as part of the post-First World War passport regime, it remains the statutory basis of India's entry controls. For UPSC it is occasional prelims material on vintage legislation still in force.

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Passport Seva

Passport Seva is the Mission Mode Project of the Ministry of External Affairs, launched in 2010 with TCS as technology partner, that digitised passport issuance through Passport Seva Kendras across India. It introduced online applications, appointment scheduling, and police verification tracking, sharply cutting delivery times. For UPSC it is a flagship example of e-governance transforming citizen services.

Example: Booking a passport appointment and tracking application status online.

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pastoralists

Pastoralists are communities whose livelihood rests on herding animals and moving with seasonal pastures, practising nomadic or transhumant migration rather than settled farming. Colonial forest and grazing laws shrank their commons and criminalised their mobility. In UPSC GS-1 they are studied through the NCERT theme on pastoralists in the modern world and questions on tribal communities.

Example: The Gujjar-Bakarwals of Jammu and Kashmir, transhumant herders moving between the plains and the high Himalayan pastures

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PAT

Perform, Achieve and Trade is the Bureau of Energy Efficiency's market-based mechanism under the National Mission for Enhanced Energy Efficiency, which assigns mandatory energy-efficiency targets to designated consumers in energy-intensive industries. Plants that beat their targets earn Energy Saving Certificates (ESCerts) that can be traded with plants that fall short, creating a market incentive for efficiency. Successive PAT cycles have progressively tightened the targets.

Example: Cement and thermal power plants covered under PAT cycles earn or buy ESCerts based on their specific energy consumption measured against assigned targets.

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Pataliputra

Pataliputra is the ancient capital of Magadha, located at present-day Patna in Bihar. Founded as the fort of Pataligram by King Udayin, it became the imperial capital under the Mauryas, when Megasthenes described its sophisticated municipal administration. Ashoka convened the Third Buddhist Council there. For UPSC, Pataliputra is the GS-1 symbol of Magadhan imperial power and of ancient Indian urban governance.

Example: The Third Buddhist Council, convened by Ashoka at Pataliputra in the 3rd century BCE to purify the Sangha.

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Pataliputra council

The Pataliputra council is the Third Buddhist Council, convened around 250 BCE at Pataliputra under Emperor Ashoka's patronage and presided over by the monk Moggaliputta Tissa. It purified the sangha of heretical elements, compiled the Abhidhamma Pitaka's Kathavatthu, and dispatched missions abroad. For UPSC it completes the four-council sequence in prelims and illustrates Ashoka's dhamma policy for mains.

Example: Ashoka's mission to Sri Lanka led by Mahinda, sent out after the council

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Patanjali's Yoga Sutras

Patanjali's Yoga Sutras is the foundational Sanskrit text of classical yoga philosophy, a compilation of about 195 short aphorisms in four chapters. It defines yoga as the stilling of the fluctuations of the mind, sets out the eight-limbed (Ashtanga) path from ethical restraints and postures to meditation and absorption, and aims at kaivalya, liberation. For UPSC it is a core text in art, culture and philosophy questions.

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patent

A patent is an exclusive legal right granted by the state to an inventor for an invention that is new, involves an inventive step, and is capable of industrial application, typically lasting 20 years. In exchange for publicly disclosing how the invention works, the patentee can exclude others from making, using, or selling it. In India the system is governed by the Patents Act, 1970, as amended to meet TRIPS obligations.

Example: Pharmaceutical product patents, which let a company exclusively market a new drug for 20 years before generic versions can enter.

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patent and latent defects

Patent defects are flaws in equipment or material that are visible on reasonable inspection, while latent defects are hidden flaws that surface only later during operation. The distinction matters in nuclear liability because Section 17(b) of the Civil Liability for Nuclear Damage Act, 2010 expressly lets the operator seek recourse against suppliers for both kinds, which is why vendors fear exposure long after delivery.

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patent battles

Patent battles are high-stakes legal fights over patent grants that test the balance between innovation incentives and public access, especially for life-saving drugs. In India they turn on Section 3(d) of the Patents Act against evergreening. For UPSC GS-3 (IPR) and GS-2 (health), they frame debates on affordable medicines and TRIPS flexibilities.

Example: Novartis v. Union of India (2013), where the Supreme Court denied a patent for the cancer drug Glivec

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patent laws

Patent laws are the legal rules granting inventors a time-bound exclusive right, usually twenty years, over a novel invention in exchange for public disclosure. India's Patents Act (1970, amended in 2005) introduced product patents while safeguarding public health through compulsory licensing. For UPSC GS-3 they govern innovation, pharmaceuticals and the tension between IP protection and access to medicines.

Example: India's 2005 amendment of the Patents Act to allow product patents in pharmaceuticals in compliance with TRIPS

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Patents (Amendment) Rules, 2024

Notified on 15 March 2024, these rules amend the Patents Rules, 2003, to speed up and simplify India's patent system. The deadline for a Request for Examination fell from 48 to 31 months; foreign-filing disclosures (Form 3) are needed only twice; the patent working statement (Form 27) is filed once every three years instead of annually; a 10 percent renewal-fee discount rewards advance electronic payment; and a new Certificate of Inventorship formally recognises inventors.

Example: An applicant filing a patent after March 2024 must request examination within 31 months of the priority date or the application lapses.

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Path

Path is a way or course of conduct, and in Indian thought it carries the specific sense of marga, the spiritual route to liberation. The tradition speaks of karma-marga (the path of action), jnana-marga (the path of knowledge) and bhakti-marga (the path of devotion), while Buddhism offers the Eightfold Path. For UPSC the term matters because philosophy and culture questions turn on the distinct paths to moksha each school prescribes.

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Pathaka

Pathaka is the Sanskrit term for a reader or reciter of sacred literature, from the root path, to read or study. In the classical tradition the pathaka publicly recited the Puranas and other sacred works for audiences, and grammarians like Panini even laid down the virtues of a good reciter, such as clarity, sweetness and correct pronunciation. For UPSC it matters as a small but telling detail of how texts were transmitted orally before and alongside writing.

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Pathinenkilkanakku

Pathinenkilkanakku is the collection of the Eighteen Lesser Texts of Tamil literature, mostly didactic poems of the post-Sangam period (roughly 100 to 500 CE). Unlike the longer love and war poems of the greater anthologies, these short venpa-meter works, including the Tirukkural and Naladiyar, teach ethics, conduct and statecraft. For UPSC it is essential for Sangam-age literature questions, where the eighteen greater and eighteen lesser texts are a recurring pairing.

Example: Tirukkural, attributed to Tiruvalluvar

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Patna Bird Sanctuary

Patna Bird Sanctuary is a protected wetland in the Jalesar subdivision of Etah district, Uttar Pradesh, and at about 1 sq km (108 hectares) it is the smallest bird sanctuary in the state. Declared a sanctuary in 1991, this shallow rain-fed lake of the Gangetic plains hosts over a hundred migratory and resident bird species in winter, and it was designated a Ramsar site in 2026.

Example: Northern pintails, greylag geese and sarus cranes gather at Patna in peak winter, when the sanctuary can host tens of thousands of birds despite its tiny size.

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Patrice Lumumba

Patrice Lumumba was the first prime minister of the independent Democratic Republic of the Congo, serving from June to September 1960. A founder of the Mouvement National Congolais in 1958, he became a symbol of African nationalism before being deposed, detained and assassinated in Katanga on 17 January 1961 amid Cold War interference. For UPSC he matters in world history and decolonisation questions as the face of Congo's troubled independence.

Example: His independence-day speech at Leopoldville on 30 June 1960

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patrilineal

Patrilineal is a kinship system in which descent, inheritance and family membership are traced exclusively through the male line, from father to son. It concentrates property and authority in men and underpins patriarchal family structures. In UPSC GS-1 (kinship, gender) it contrasts with matrilineal systems like those of the Khasi and Garo of Meghalaya.

Example: The traditional Hindu coparcenary, which passed property through the male line until the 2005 Hindu Succession Amendment made daughters coparceners too

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patrilocal

Patrilocal is a marriage residence pattern in which the bride leaves her natal home to live with or near her husband's family after marriage. It severs the woman's natal support networks and is linked to son preference and dowry pressures. In UPSC GS-1 (society, gender, demography) it explains female marriage migration and aspects of the child sex ratio in north India.

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Patron

Patron is a supporter or sponsor who funds art, literature or religious activity without directly creating it. In Indian history royal and elite patronage built temples, commissioned sculptures, sustained court poets and protected monasteries, so shifts in patronage often explain the rise and fall of styles and schools. For UPSC the concept matters because art-and-culture questions frequently link a dynasty's monuments to the patrons who financed them.

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patta-kabuliyat

Patta-kabuliyat is a paired land document of the Mughal and colonial revenue system: the patta is the title deed granted to the tenant or revenue holder, and the kabuliyat is the counter-deed in which the holder accepts the terms and agrees to pay the assessed revenue. For UPSC GS-1 it illustrates formalised agrarian relations under the zamindari revenue system.

Example: Zamindars in Bengal issuing pattas to ryots who returned signed kabuliyats under the Permanent Settlement

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Pattabhi Sitaramayya

Pattabhi Sitaramayya was an Indian freedom fighter and Congress leader from Andhra, best remembered as the founder of Andhra Bank in 1923. He lost the 1939 Congress presidential contest to Subhas Chandra Bose, won the presidency in 1948, served on the Constituent Assembly and the JVP committee on linguistic states, and later became Governor of Madhya Pradesh. For UPSC he matters in modern-history and banking questions as a leader who combined nationalism with institution-building.

Example: The founding of Andhra Bank at Machilipatnam on 28 November 1923

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Pattachitra

Pattachitra is the cloth-based scroll painting tradition of Odisha and West Bengal, its name joining patta (cloth) and chitra (picture). Painted in bold outlines and natural mineral colours, it depicts Jagannath, Krishna, episodes from the Ramayana and Mahabharata, and temple rituals, and is closely tied to the Jagannath temple at Puri. For UPSC it is a standard art-and-culture topic, asked alongside other regional painting schools.

Example: The Jagannath Temple at Puri

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Pattadakal

Pattadakal is the 7th-8th century Chalukyan temple complex on the Malaprabha river in Karnataka, inscribed as a UNESCO World Heritage Site in 1987. Built by the Chalukyas of Badami, its ten temples display both Dravida (southern) and Nagara (northern) styles, including the Virupaksha and Papanatha temples. For UPSC it is the textbook site for early medieval temple architecture and the Vesara synthesis of the two great styles.

Example: UNESCO's 1987 inscription recognised Pattadakal as the culmination of early Chalukyan experiments in the Vesara style of temple architecture.

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Pattanam

Pattanam is an archaeological site in Kerala, near North Paravur, identified by excavators with the legendary ancient port of Muziris. Excavations by the Kerala Council for Historical Research since 2007 have uncovered Roman amphorae, a wharf, a two-thousand-year-old dugout canoe, beads and brick structures, showing a multicultural trading town occupied from about the 2nd century BCE. For UPSC it anchors prelims questions on Indo-Roman trade and the spice route.

Example: The Kerala Council for Historical Research excavations begun in 2007

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pattern

Pattern is a recurring arrangement, sequence or regularity in phenomena, used in UPSC answers to describe ordered features such as settlement patterns, cropping patterns, monsoon patterns or voting patterns. Identifying a pattern lets an aspirant move from isolated facts to structured analysis. In GS-1 and GS-3 it is a basic tool for geography and economy answers.

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Pattinappalai

Pattinappalai is a 301-line poem of the Sangam anthology Pattuppattu, composed by Katiyalur Uruttirankannanar around the 1st to 2nd century CE. Almost the entire poem is a vivid portrait of Kaveripattinam (Puhar), the early Chola port at the mouth of the Kaveri, with its Yavana merchants, warehouses and the glory of King Karikala. For UPSC it is a key literary source on Chola maritime trade and early Tamilakam.

Example: The Chola port of Kaveripattinam (Puhar)

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Pattini cult

The Pattini cult is the worship of Kannagi, the heroine of the Tamil epic Silappatikaram, deified as the goddess Pattini. Popular among both Sinhalese Buddhists and Tamil Hindus of Sri Lanka, she is venerated as a guardian deity of fertility, health and chastity, with the Chera king Senguttuvan traditionally credited as the cult's founder. For UPSC it illustrates the religious and cultural links between South India and Sri Lanka.

Example: The annual Gammaduwa fertility rites honouring Pattini in Sri Lanka

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Pattuppattu

Pattuppattu, meaning the Ten Idylls, is a collection of ten long poems of Sangam literature, including Tirumurukarruppatai, Pattinappalai and Maturaikkanci. These elaborate descriptive poems praise kings and gods and give rich detail on early Tamil society, ports, battles and landscapes. Along with the Ettuttokai and the Eighteen Lesser Texts, it forms the core Sangam corpus. For UPSC it is indispensable for ancient South Indian history and literature questions.

Example: Tirumurukarruppatai, a devotional poem to the god Murugan

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patwari

Patwari is the village-level revenue official who maintains land records such as the khasra, khatauni and jamabandi, records mutations, and reports crop conditions through girdawari. Known as talati in Gujarat and Maharashtra, the patwari is the lowest rung of the land-revenue machinery. For UPSC GS-2 and GS-3 the post symbolises both grassroots administration and petty corruption in land governance.

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Paul Brass's instrumentalism

Paul Brass's instrumentalism is the theory that ethnic identities are not primordial givens but are constructed and manipulated by political elites pursuing power. Brass, a political scientist of India, argued in works like Ethnicity and Nationalism that cultural symbols become resources which leaders activate to mobilise communities, a view he debated with Francis Robinson. For UPSC it is a standard framework in sociology and political science for analysing communalism and identity politics.

Example: Ethnicity and Nationalism: Theory and Comparison (1991)

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Paul Ekman

Paul Ekman was an American psychologist who pioneered the scientific study of facial expressions and emotion. Working with Wallace Friesen in the 1960s and 1970s, he argued that six basic emotions, happiness, sadness, anger, fear, surprise and disgust, are expressed through universal facial signals, and he developed the Facial Action Coding System and the study of microexpressions. For UPSC he appears in psychology and ethics-adjacent questions on emotions and non-verbal communication.

Example: His cross-cultural studies with the Fore people of Papua New Guinea

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Pax Silica

Pax Silica is a US-led international collaboration launched in December 2025 for secure, resilient AI ecosystems across the silicon stack: critical minerals, semiconductor fabrication, AI systems and deployment infrastructure. India joined at the AI Impact Summit in February 2026.

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Payments Banks

Payments Banks are a class of differentiated banks created on the Nachiket Mor committee's recommendation to deepen financial inclusion. Licensed by the RBI from 2015, they accept small deposits and offer payments, remittances and debit cards, but cannot lend or issue credit cards, keeping risk low. For UPSC they are a recurring economy topic, tested against Small Finance Banks and the financial-inclusion architecture.

Example: Airtel Payments Bank, India's first, launched in 2016

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Payments for Ecosystem Services (PES)

Payments for Ecosystem Services are arrangements in which the beneficiaries or users of nature's services, such as clean water, pollination or carbon storage, pay the landowners or communities who maintain the ecosystems providing them. The idea turns conservation into income, aligning livelihoods with ecological protection through voluntary and conditional transactions.

Example: A city water utility paying upstream farmers to protect forests that keep its reservoir silt-free is a classic PES deal.

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Pazhassi Raja

Pazhassi Raja (Kerala Varma, 1753-1805) was the ruler of Kottayam in Malabar who led a prolonged guerrilla resistance against the British East India Company after the Anglo-Mysore wars. Using forest warfare with tribal support, he defied British forces for nearly a decade before dying in battle in 1805. He matters for UPSC as an early anti-colonial resistance figure of Kerala, remembered as the 'Lion of Kerala'.

Example: Pazhassi Raja's use of guerrilla tactics in the Wynad forests is studied alongside other pre-1857 resistances.

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PC-PNDT Act

The PC-PNDT Act is the Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Act, 1994, which bans sex determination of the foetus and regulates ultrasound and genetic clinics to check female foeticide. Amended in 2003 to cover pre-conception techniques, it mandates registration of clinics and punishes violations. For UPSC, it is the key law in questions on declining sex ratio and gender justice.

Example: Amended in 2003 to include pre-conception sex selection

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PCA

PCA is the Reserve Bank of India's Prompt Corrective Action framework, a structured early-intervention regime for banks breaching thresholds on capital adequacy, asset quality or profitability. Triggered banks face curbs on lending, expansion and dividends until they recover. Introduced in 2002 and tightened in 2017, it was invoked against several weak public sector banks. For UPSC GS-3, it is the standard example of banking supervision.

Example: IDBI Bank placed under PCA in May 2017

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PCM-R approach

The PCM-R approach is the four-pronged consensus strategy for promoting organic and sustainable agriculture: Policy incentives, Consumer awareness, Market growth, and Research and development. It argues that organic farming scales only when supportive policy, informed buyers, functioning markets and scientific backing move together. For UPSC it is a ready-made framework for answers on mainstreaming organic and natural farming.

Example: Sikkim's organic mission combined state policy support with market branding of organic produce, following the PCM-R logic.

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PCPNDT Act (1994)

The PCPNDT Act (1994), the Pre-Conception and Pre-Natal Diagnostic Techniques Act, prohibits sex determination of the foetus to curb female foeticide, regulating ultrasound clinics and punishing violations. It is the legal pillar of the fight against sex-selective abortion. Essays pair it with BBBP's awareness campaigns.

Example: The 1994 law banning prenatal sex determination to stop female foeticide.

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PDS

The PDS is India's Public Distribution System, the network of fair price shops distributing subsidised foodgrains to identified households. Revamped as the Targeted PDS in 1997 and placed on a rights footing by the National Food Security Act, 2013, it now reaches over 80 crore beneficiaries. For UPSC GS-3, it anchors questions on food security, leakages, DBT versus in-kind transfers and the One Nation One Ration Card scheme.

Example: National Food Security Act, 2013

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Peace Clause

The Peace Clause is the 2013 Bali Ministerial decision, made permanent in 2014, that bars WTO members from challenging developing countries' food-stockholding programmes that breach AMS limits. It protects India's MSP-based procurement for the PDS pending a permanent solution. For UPSC it is the legal shield of India's food-security architecture.

Example: India invoked the Peace Clause to protect its rice procurement when its notified support crossed de minimis levels.

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Peace with Nature

Peace with Nature was the theme of the 16th Conference of Parties (COP16) to the UN Convention on Biological Diversity, held in Cali, Colombia, in 2024. It framed biodiversity action as a pact between humanity and the natural world, and the summit's outcomes included the Cali Fund for sharing benefits from digital sequence information on genetic resources.

Example: Under the Peace with Nature theme, COP16 pushed countries to operationalise the Kunming-Montreal framework's 30 by 30 conservation target and agree on how companies using genetic data should pay into biodiversity finance.

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Peace, Land and Bread

Peace, Land and Bread was the Bolsheviks' chief agitational slogan in 1917, promising an end to Russia's role in the First World War, redistribution of land to the peasantry and food for hungry workers. Crafted for the least politicised masses, it translated Marxist revolution into three immediate demands and powered support for the October Revolution. For UPSC it is the standard shorthand for the Russian Revolution in world-history questions.

Example: The Bolshevik seizure of power in the October Revolution of 1917

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peaceful nuclear explosion

A peaceful nuclear explosion is a nuclear detonation claimed to be for civil purposes such as mining, excavation or earth-moving rather than weaponisation. India described its first test this way to assert a peaceful intent. In UPSC GS-3 and internal security it marks the start of India's nuclear programme and the debate over dual-use technology under the NPT regime.

Example: India's Pokhran-I test of May 1974, codenamed Smiling Buddha

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peacekeeping

Peacekeeping is the deployment of multinational forces, usually under the UN flag, to monitor ceasefires, protect civilians and support post-conflict transitions, operating with host consent and impartiality. India is among the largest troop contributors to UN missions. For UPSC GS-2 (IR) it showcases India's responsible-power image and its push for a greater say in global security governance.

Example: India's long-standing troop contribution to UN missions such as MONUSCO in the Democratic Republic of Congo

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Peak/stability

Peak/stability is the phase of a cycle in which a rising trend reaches its highest point and then levels off instead of continuing upward. The term is used across economics, demography and environmental studies to mark the crest before a possible decline or a new equilibrium. For UPSC it matters as descriptive vocabulary in data-interpretation and trend questions, where recognising a peak is often the first analytical step.

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Pearl Harbor

Pearl Harbor is the US naval base in Hawaii that Japan attacked on 7 December 1941, crippling the American Pacific Fleet in a surprise dawn raid. The attack ended American neutrality and brought the United States into the Second World War the next day, reshaping the war's course in the Pacific. For UPSC it is a landmark event in world-history questions on the Second World War.

Example: The Japanese air attack of 7 December 1941

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peasant participation stayed thin

This is a historian's verdict that peasant involvement in a movement remained limited, narrowing its mass base to the urban middle classes. Applied to the Swadeshi movement (1905-08), it explains why boycott and swadeshi enterprise never became a rural revolt. For UPSC GS-1 it is a standard limitation cited for early nationalist movements before Gandhi's peasant mobilisations.

Example: The Swadeshi movement, 1905-08

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Peat

Peat is a soil-like material formed from partially decayed plant matter that accumulates in waterlogged, oxygen-poor conditions such as bogs and marshes. Rich in carbon, it burns as a low-grade fuel, and its undisturbed layers preserve a record of past climates. For UPSC it matters in geography and environment questions, especially where peatlands are discussed as carbon stores vulnerable to drainage and fire.

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Peatlands

Peatlands are waterlogged ecosystems where dead plant material accumulates as peat because decomposition is too slow in oxygen-poor, acidic conditions. Though they cover only about 3 percent of the Earth's land surface, they store vast amounts of carbon, so draining or burning them releases greenhouse gases and destroys unique biodiversity.

Example: Indonesia's drained peatlands have fuelled devastating peat fires that send transboundary haze across Southeast Asia, which is why their conservation is a climate priority.

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Peaty and marshy

Peaty and marshy is a category of Indian soils found in waterlogged areas such as the Kuttanad backwaters of Kerala and parts of coastal Odisha, West Bengal and Bihar. Rich in organic matter and often acidic, these soils suit paddy cultivation when drained and managed. For UPSC it is one of the eight major soil types of India, asked in physical-geography questions on soil distribution.

Example: The Kuttanad region of Kerala

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PECA, 2019

the Prohibition of Electronic Cigarettes Act, 2019, which banned the production, import, sale, distribution, storage and advertisement of e-cigarettes in India.

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pedestrians' constitutional right

Pedestrians' constitutional right is the Supreme Court-recognised right to safe, unobstructed footpaths as part of the fundamental rights to life and movement. In 2025 the Court held that clear footpaths are guaranteed by Article 21, and that the right to walk on demarcated footpaths flows from Articles 19 and 21, taking priority over motorised vehicles. Example: the Court directed states and local bodies to frame footpath guidelines and remove encroachments.

Example: The Supreme Court's 2025 directions requiring states and local bodies to frame footpath guidelines and remove encroachments from footpaths.

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Peer groups

Peer groups are the people of roughly the same age, status or interests with whom an individual interacts regularly, such as classmates or neighbourhood friends. Sociologists treat them as a key agency of socialisation, second to the family, through which children and adolescents learn norms, values and behaviour. For UPSC the concept appears in sociology questions on socialisation and the agencies that shape personality.

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PENCIL

PENCIL (Platform for Effective Enforcement for No Child Labour) is the Ministry of Labour and Employment's online portal for enforcing child-labour laws. It connects the enforcement machinery with the National Child Labour Project, lets citizens lodge complaints about child labour, and tracks rescued children through rehabilitation. It is the digital enforcement arm of the Child Labour (Prohibition and Regulation) Act framework.

Example: A complaint about children working in a fireworks unit can be filed on PENCIL and routed to the district task force for rescue.

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peneplain

A peneplain is a low-relief, nearly level land surface produced by prolonged erosion that wears a region down close to base level, the end stage of the Davis cycle of erosion. Residual hills called monadnocks may survive above it. In UPSC GS-1 (geomorphology) it tests understanding of the cycle of erosion and denudational landforms.

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peninsular gaps

Peninsular gaps are low passes or depressions breaking the continuity of peninsular India's hill ranges, chiefly the Western Ghats, and serving as corridors for rail, road and wind. They separate distinct hill massifs and influence settlement and rainfall. In UPSC GS-1 (physical geography) they matter for transport routes, towns and the distribution of monsoon rainfall.

Example: The Palghat Gap in Kerala, separating the Nilgiri Hills from the Anaimalai Hills

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Peninsular rivers

Peninsular rivers are the rivers of the Deccan plateau and central highlands, flowing east into the Bay of Bengal or, like the Narmada and Tapi, west into the Arabian Sea. Rain-fed and seasonal, they rise mainly in the Western Ghats and include the Godavari, Krishna, Kaveri, Mahanadi, Narmada and Tapi. For UPSC they are central to Indian physical geography, drainage-pattern and river-linking questions.

Example: The Godavari, the longest peninsular river

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Peninsular War (1807-1814)

The Peninsular War (1807-1814) was Napoleon's grinding campaign in Spain and Portugal, the part of the Napoleonic Wars fought on the Iberian Peninsula. French occupation sparked popular uprisings, the Dos de Mayo revolt of 1808 and sustained guerrilla warfare, which, with British help under Wellington, bled Napoleon's armies. For UPSC it matters in world history as a classic case of national resistance and the origin of the term guerrilla warfare.

Example: The Dos de Mayo uprising in Madrid in May 1808

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pension scheme of the Ministry of Labour and Employment from 2019

This refers to the Pradhan Mantri Shram Yogi Maandhan (PM-SYM), a pension scheme launched in 2019 by the Ministry of Labour and Employment for unorganized-sector workers. It assures a monthly pension of Rs 3,000 after age 60 against small contributory payments. For UPSC, PM-SYM is a model answer on social security for informal workers and welfare-scheme questions.

Example: PM-SYM, launched 2019

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People's Biodiversity Registers (PBRs)

People's Biodiversity Registers are village-level documents that record local biological resources, their uses and associated traditional knowledge, prepared by Biodiversity Management Committees under the Biological Diversity Act, 2002. They serve as legal evidence of community knowledge and a baseline for conservation and for benefit-sharing when resources are commercially used.

Example: A Biodiversity Management Committee documenting a medicinal plant and its traditional use in the PBR strengthens the community's claim to a share of benefits if a company develops a product from it.

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People's Liberation Guerrilla Army, or PLGA

The People's Liberation Guerrilla Army is the armed wing of the CPI (Maoist), organised into military companies, platoons and guerrilla squads operating from forest bases. It carries out ambushes, IED attacks and weapons snatching against security forces. It matters as the military instrument that makes Maoism an armed insurgency rather than just an ideology.

Example: PLGA ambushes on CRPF patrols in Sukma, Chhattisgarh

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People's Plan

The People's Plan is the 1945 ten-year development plan drafted by M.N. Roy on behalf of the Indian Federation of Labour. Envisaging about Rs. 15,000 crore of investment, it prioritised agriculture, basic needs and state-led industrialisation for the masses rather than big capital. For UPSC it matters as one of the wartime planning exercises (with the Bombay Plan and Gandhian Plan) that shaped post-independence planning debates.

Example: UPSC questions routinely ask aspirants to distinguish Roy's 1945 People's Plan from the 1944 Bombay Plan of industrialists and the Gandhian Plan.

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People's Republic of China

The People's Republic of China is the communist state proclaimed by Mao Zedong in Beijing on 1 October 1949 after victory in the civil war; the defeated Republic of China government withdrew to Taiwan in December 1949.

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pepper and spices

Pepper and spices were the high-value commodities of the Malabar Coast trade that drew Arab merchants and then Europeans to India, with black pepper once called black gold. Control of the spice trade drove early colonial rivalries on the western coast. In UPSC GS-1 they explain why Vasco da Gama reached Calicut in 1498 and how commerce seeded European imperialism.

Example: Vasco da Gama's 1498 voyage to Calicut in search of pepper

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PEPSU appropriation bill

The PEPSU Appropriation Bill was the 1954 legislation on which President Dr. Rajendra Prasad exercised India's first absolute veto. Parliament had passed the bill during President's Rule in PEPSU (Patiala and East Punjab States Union, a Part B state formed in 1948 from eight princely states), but by the time it reached the President for assent, President's Rule had been revoked, so he withheld assent and the bill lapsed. It is the textbook example of absolute veto under Article 111.

Example: UPSC frequently pairs this 1954 case with President Venkataraman's 1991 veto of the MPs' salary bill as the two uses of absolute veto.

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Per Drop More Crop (PDMC)

Per Drop More Crop is the micro-irrigation component of PMKSY that subsidises drip and sprinkler systems to raise water-use efficiency at the farm level. It provides financial assistance, with higher rates for small and marginal farmers, and is implemented alongside the Micro Irrigation Fund. For UPSC it is the flagship scheme for the More Crop Per Drop goal.

Example: A smallholder installing drip for vegetables with PDMC subsidy halves water use while raising yields.

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per-capita fairness

Per-capita fairness is a climate-equity principle holding that every person's share of the atmosphere's capacity to absorb emissions should count equally, so countries are judged on emissions per person rather than national totals. It underpins the developing-country argument that historically high emitters bear greater responsibility for cuts and that poorer nations retain development space. It is central to the principle of common but differentiated responsibilities.

Example: India's per-capita carbon emissions remain far below the global average, a fact India cites in climate negotiations to defend its development space.

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per-capita income

Per-capita income is the average income of a country's or state's residents, computed by dividing national income (Net National Income) by the mid-year population, and published by the National Statistical Office. It is a rough measure of economic well-being and living standards, though it hides inequality. For UPSC it is a standard development indicator used to compare states and track growth.

Example: Inter-state comparisons show wide gaps, with Goa among the highest and Bihar among the lowest per-capita incomes.

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perceived conflict

Perceived conflict is a disagreement that exists only in the minds of the parties, who believe their goals or values are incompatible though no real incompatibility exists, often fuelled by miscommunication or mistrust. Administrators resolve it through dialogue and transparency. In UPSC GS-4 (attitude, emotional intelligence) it tests handling of interpersonal and organisational friction.

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Perestroika

Perestroika, Russian for restructuring, was Mikhail Gorbachev's programme of political and economic reform in the Soviet Union from 1985. It sought to end the era of stagnation by loosening central planning, permitting limited market mechanisms and, alongside glasnost (openness), allowing public debate. For UPSC it matters in world history as the reform drive that unintentionally hastened the Soviet collapse in 1991 and the Cold War's end.

Example: Gorbachev's reform programme launched in March 1985

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Perform, Achieve and Trade

Perform, Achieve and Trade (PAT) is a market based energy efficiency mechanism run by the Bureau of Energy Efficiency under the Energy Conservation Act, 2001. It sets energy consumption reduction targets for large energy intensive units called Designated Consumers across sectors like thermal power, steel and cement; units that exceed targets earn tradable Energy Saving Certificates (ESCerts), while underperformers must buy them. The scheme was launched in 2012 and operates in successive cycles.

Example: PAT covers sectors such as aluminium, cement, chlor-alkali, fertiliser, iron and steel, pulp and paper, railways, textiles and thermal power.

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Perform, Achieve and Trade (PAT)

Perform, Achieve and Trade is a market-based energy-efficiency scheme of the Bureau of Energy Efficiency under the National Mission for Enhanced Energy Efficiency. Energy-intensive industries designated as consumers are given specific energy consumption targets, and those that beat their targets earn Energy Saving Certificates (ESCerts) which they can sell to those that miss them.

Example: A cement plant that cuts its energy use below its PAT target can sell the surplus ESCerts on power exchanges to a plant that fell short.

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Period

Period is a span of time treated as a unit, and in UPSC usage it usually means the conventional divisions of history, ancient, medieval and modern. Periodisation shapes how syllabi, textbooks and questions organise events, rulers and movements, and it carries assumptions about what defines each age. For UPSC the concept matters because mains answers are expected to locate every development in its proper period.

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Periodic Labour Force Survey

The Periodic Labour Force Survey is India's official survey of employment and unemployment, conducted by the National Statistical Office since 2017. It yields quarterly estimates for urban areas and annual estimates for rural and urban India together, producing the Labour Force Participation Rate, Worker Population Ratio and Unemployment Rate. For UPSC it is the standard data source behind economy and social-sector questions on jobs and unemployment.

Example: Launched by the National Statistical Office in 2017

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Periodic Labour Force Survey (PLFS)

The Periodic Labour Force Survey, abbreviated PLFS, is India's official measure of employment and unemployment, run by the National Statistical Office from 2017. It gives quarterly estimates for urban India and annual combined estimates, generating the Labour Force Participation Rate, Worker Population Ratio and Unemployment Rate. For UPSC it underpins most prelims and mains data on jobs, and the abbreviation itself is frequently tested.

Example: Launched by the National Statistical Office in 2017

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Periods

Periods is the plural of period, denoting the distinct spans of time into which history is divided for study. In UPSC preparation the ancient, medieval and modern periods organise art, polity and economic developments, and a fact's period decides which paper and theme it belongs to. For UPSC the term matters as basic scaffolding: every answer gains when it places events in the right period.

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Periplus of the Erythraean Sea

The Periplus of the Erythraean Sea is a 1st-century-CE Greek merchant's sailing guide to the Red Sea, Persian Gulf, and Indian Ocean coasts. It names Indian ports such as Barygaza, Muziris, and Nelcynda and lists exports of pepper, pearls, and textiles paid for with Roman gold. It matters for UPSC as the richest foreign account of Indo-Roman trade and a key source for ancient Indian maritime history.

Example: the port of Muziris in the Chera kingdom

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Permafrost

Permafrost is ground, soil, rock or sediment, that remains frozen at or below zero degrees Celsius for at least two consecutive years, underlying large parts of the Arctic, sub-Arctic and high mountains. It locks away huge stores of organic carbon and methane, so thawing driven by warming releases greenhouse gases, destabilises infrastructure and reshapes landscapes.

Example: Thawing permafrost in Siberia has buckled roads and buildings and released methane from ancient organic matter, creating a feedback loop that accelerates warming.

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Permanent Commission

Permanent Commission is a career in the Indian armed forces continuing till retirement, with full pension and benefits, as opposed to a Short Service Commission's 10 to 14 year tenure. The Supreme Court's Babita Puniya judgment (2020) opened it to women officers on par with men. It is the institutional prize at the centre of the gender-parity-in-uniform debate.

Example: The Supreme Court's 2020 Babita Puniya ruling granting women Army officers Permanent Commission.

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Permanent Commission (PC)

Permanent Commission is the grant of full-length service careers to Short Service Commission officers, extended to women officers by the Supreme Court's 2020 Babita Puniya judgment. It matters as the legal milestone for gender equality in the armed forces.

Example: Women officers granted PC after the 2020 Supreme Court ruling

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Permanent Court of International Justice

The Permanent Court of International Justice was the world's first permanent international tribunal with general jurisdiction, created under the League of Nations and seated at the Peace Palace in The Hague. Sitting from 1922 to 1940, it decided 29 contentious cases and gave 27 advisory opinions before being dissolved in 1946. For UPSC it matters as the direct predecessor of the International Court of Justice in world-history and international-relations questions.

Example: The SS Lotus case of 1927

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permanent e-commerce customs-duty moratorium

The permanent e-commerce customs-duty moratorium is the long-standing WTO practice, in force since the 1998 Geneva ministerial, of not imposing customs duties on electronic transmissions. India has resisted making it permanent, arguing it costs developing countries tariff revenue and policy space. For UPSC GS-3 and GS-2 (IR) it is a live WTO dispute on digital trade and development.

Example: The WTO's repeated extensions of the moratorium, most recently carried to MC14 at the Abu Dhabi ministerial in 2024

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Permanent Indus Commission

The Permanent Indus Commission is the bilateral body set up under the Indus Waters Treaty of 1960 between India and Pakistan. Comprising the Indus commissioners of both countries, it meets at least once a year, alternately in each country, to exchange data and resolve questions on the treaty's implementation before disputes escalate. For UPSC it is the core institution in India-Pakistan water questions and a classic example of treaty-based cooperation.

Example: The 116th meeting of the Commission in New Delhi in March 2021

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Permanent Settlement

The Permanent Settlement was the land-revenue system introduced by Lord Cornwallis in 1793 in Bengal, Bihar and Odisha. It recognised zamindars as proprietors of the land in return for a fixed revenue demand payable to the Company in perpetuity, enforceable through the Sunset Law. For UPSC it is foundational to modern-history questions on colonial land systems, compared and contrasted with the Ryotwari and Mahalwari settlements.

Example: Introduced by Lord Cornwallis in Bengal in 1793

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Permanent Settlement of 1793

The Permanent Settlement of 1793 was Lord Cornwallis's land-revenue arrangement for Bengal, Bihar and Odisha, making the revenue demand on zamindars fixed forever. Zamindars became hereditary proprietors, liable to pay by sunset on the due date or lose their estates, which often burdened peasants with rack-renting. For UPSC the 1793 date is a staple prelims fact, and the settlement's effects are a recurring mains theme on agrarian distress.

Example: Introduced by Lord Cornwallis in Bengal in 1793

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permanent solution for public stockholding

The permanent solution for public stockholding is the demand by developing countries, led by India and the G-33, for a lasting WTO rule that fully shields MSP-based food-security stockholding from subsidy caps, replacing the interim peace clause of 2013. For UPSC GS-3 and GS-2 (IR) it is the core of India's agriculture negotiations and food-security diplomacy at the WTO.

Example: The Bali ministerial decision of 2013, which gave only an interim peace clause and set a 2015 deadline for the permanent solution

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Perovskite nanomaterials

Perovskite nanomaterials are nano-structured compounds used in next-generation solar cells that significantly boost panel efficiency. Their tunable optical properties at the nanoscale make them attractive for photovoltaics.

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peroxyacetyl nitrate (PAN)

Peroxyacetyl nitrate is a secondary air pollutant formed when nitrogen oxides and volatile organic compounds react in sunlight, and it is a major component of photochemical smog. PAN is a powerful eye irritant and damages plant tissues, stunting crop growth. Because it is stable in cold air, it can travel long distances and spread urban pollution to rural areas.

Example: PAN levels spike in cities during hot, sunny, traffic-heavy conditions as part of smog episodes.

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Persian

Persian is the Iranian language that served as the language of administration, diplomacy and high culture in much of medieval India. Under the Delhi Sultans and the Mughals it was the court language, carrying Persian literary and bureaucratic traditions into Indian governance until the British replaced it with English in the early nineteenth century. For UPSC it matters in medieval-history questions on language, literature and court culture.

Example: The Mughal court, where Persian was the official administrative language

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Persian Gulf and the Gulf of Oman

The Persian Gulf and the Gulf of Oman are the two connected waterways flanking the Strait of Hormuz, linking the oil-rich Gulf states to the Arabian Sea and the Indian Ocean. The Persian Gulf lies between Iran and the Arabian Peninsula, while the Gulf of Oman opens toward the open sea. For UPSC they matter in geography and international-relations questions on energy security, since a large share of India's oil imports passes through Hormuz.

Example: The Strait of Hormuz linking the two gulfs

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Persian-Islamic forms with Deccan materials and climate

Persian-Islamic forms with Deccan materials and climate is the architectural idiom of the Deccan sultanates, where Persian and Islamic features like domes, arches and minarets were built with local Deccan basalt and trap stone, suited to the dry plateau climate. Bahmani and successor Adil Shahi, Qutb Shahi and Nizam Shahi rulers fused imported forms with indigenous masonry. UPSC prelims uses this phrase to mark the distinct Deccan identity of monuments like Gol Gumbaz, as against Delhi Sultanate and Mughal styles.

Example: Gol Gumbaz at Bijapur, completed in 1656 under the Adil Shahis

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Persian, Hindavi, Punjabi and Dakhni

Persian, Hindavi, Punjabi and Dakhni are the major literary languages that flourished in medieval India. Persian was the court and administrative language, Hindavi the early Delhi speech that grew into Hindi and Urdu, Punjabi the language of the Punjab's Sufi and saint poetry, and Dakhni the Deccan's literary Urdu cultivated by the Bahmani and Deccan sultanates. For UPSC the cluster matters in medieval-culture questions on how languages and literatures developed side by side.

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Personal Income is

Personal Income is the total income actually received by individuals and households from all sources in a year, including wages, rent, interest, dividends and government transfer payments like pensions and subsidies. In national income accounting it is derived from national income by subtracting corporate taxes, undistributed profits and social security contributions, then adding back transfers. UPSC prelims tests the distinction between personal income, disposable income and national income in economy questions.

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Personal values are the individual’s own convictions about what matters

Personal values are the individual’s own convictions about what matters most in life, the internal standards that guide choices when no rulebook applies. They include honesty, compassion, loyalty, ambition and independence, shaped by family, culture and experience. Unlike professional values, they are not imposed by an organisation. For UPSC GS-4, personal values explain the foundation on which integrity and ethical conduct rest, a staple of ethics case studies.

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personality rights

Personality rights protect an individual's name, image, likeness, and voice from unauthorised commercial exploitation. In India they are judge-made, emerging from the right to privacy and publicity rather than any statute, and courts grant injunctions when a celebrity's persona is misused, especially through AI-generated deepfakes and fake endorsements. Example: in 2023 the Delhi High Court restrained the misuse of actor Anil Kapoor's name, image, and voice, recognising his personality rights.

Example: The Delhi High Court's 2023 order restraining unauthorised commercial use of actor Anil Kapoor's name, image, and voice.

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Perundaram

Perundaram is the category of higher officials in the administrative system of the Chola empire, ranked above the Sirudaram, the lower officials. These officers assisted the king in central and provincial administration, carried out revenue, military and secretarial functions, and were rewarded with titles and land assignments called jivitas. UPSC prelims uses the Perundaram-Sirudaram distinction to test knowledge of the Chola bureaucracy, one of the best-documented pre-modern administrative systems.

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Perundevanar's

Perundevanar’s is the possessive form pointing to Perundevanar, the Tamil poet remembered as Baratham Paadiya Perundevanar, the poet who sang the Mahabharata. A medieval poet of the 9th century CE, he authored the Bharatha Venba, a Tamil rendering of the Mahabharata of which only about 830 of the original 12,000 verses survive. UPSC art and culture questions value him as the landmark figure in the Tamil reception of the Sanskrit epic.

Example: the Bharatha Venba, his 9th-century Tamil rendering of the Mahabharata

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Pervez Musharraf

Pervez Musharraf was the Pakistani army general who seized power in a 1999 military coup against Prime Minister Nawaz Sharif and ruled Pakistan as President from 2001 to 2008. His tenure saw Pakistan’s frontline role in the US-led war in Afghanistan, the 2001 Agra Summit with India, and the 2007 emergency that ended his legitimacy. He matters for UPSC because India-Pakistan relations, the Kargil War and the Musharraf era shape mains answers on bilateral ties.

Example: the 1999 military coup that ousted Nawaz Sharif

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PESA

PESA is the Panchayats (Extension to Scheduled Areas) Act, 1996, which extends the 73rd Amendment's panchayat system to Fifth Schedule areas with suitable modifications. It empowers the Gram Sabha over land acquisition, minor forest produce, village markets and local dispute resolution, recognising tribal self-governance. For UPSC, it is the core law on tribal autonomy, frequently paired with the Forest Rights Act, 2006.

Example: Enacted in 1996 for Fifth Schedule areas

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PESA (the Panchayats (Extension to Scheduled Areas) Act, 1996) is

PESA, the Panchayats (Extension to Scheduled Areas) Act of 1996, is the law that carries Part IX panchayat governance into Scheduled Areas while adapting it to tribal custom. Its Gram Sabha is vested with ownership of minor forest produce, control over land alienation, and a mandatory say in land acquisition and resettlement. For UPSC GS-2, it is the benchmark statute for tribal self-rule under the Fifth Schedule.

Example: Gram Sabha consultation required before land acquisition in Scheduled Areas

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PESA Act

The PESA Act is the short name of the Panchayats (Extension to Scheduled Areas) Act, 1996, which extends the panchayat provisions of Part IX of the Constitution to Fifth Schedule tribal areas. It vests the Gram Sabha with powers over land acquisition consent, ownership of minor forest produce, control of moneylending and village markets, protecting tribal self-governance. Its weak implementation is a recurring UPSC theme.

Example: A mining project in a Scheduled Area needs the Gram Sabha's prior recommendation under PESA before land can be acquired.

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PESA, 1996

PESA, 1996 is shorthand for the Panchayats (Extension to Scheduled Areas) Act passed in 1996, Parliament's response to the Bhuria Committee's recommendation that tribal areas get self-governance rooted in their own traditions. The Act makes the Gram Sabha the pivot of local authority in Fifth Schedule areas. For UPSC prelims, the year 1996 and the Bhuria Committee link are the two most tested facts.

Example: Based on the Bhuria Committee report (1995)

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Peshwa at Pune

Peshwa at Pune is the shorthand for the hereditary chief ministers of the Maratha Empire who made Pune their seat of power from the early 18th century. Beginning with Balaji Vishwanath, Peshwas like Baji Rao I and Madhavrao I became the de facto rulers of the Maratha confederacy, administering from Shaniwar Wada. The office ended with Baji Rao II’s defeat in the Third Anglo-Maratha War in 1818. UPSC history links Pune, the Peshwas and Maratha expansion as one theme.

Example: Shaniwar Wada, the Peshwas’ seat in Pune

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PESTLE

PESTLE is an analytical framework that scans the Political, Economic, Social, Technological, Legal and Environmental dimensions of an issue. In internal-security analysis it is used to map how a threat like cross-border terrorism hits every domain, from politics to the economy. It matters for UPSC answers because it forces a genuinely multidimensional treatment of security topics.

Example: Mapping terror's impact across politics, economy and society

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PESTLE lens

PESTLE lens is an analytical framework that scans any issue across six dimensions: Political, Economic, Social, Technological, Legal and Environmental. It forces balanced, multi-causal reasoning instead of single-factor explanations. For UPSC it matters because mains answers and essays score higher when they examine a policy or event from all six angles.

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Petitions

Petitions, in the UPSC context, are formal written requests addressed to an authority seeking redress of a grievance or action on a matter of public importance. Both Houses of Parliament have a Committee on Petitions that examines petitions on bills and public issues and reports on them. Petitions also underpin public-interest litigation and grievance redressal systems like CPGRAMS. They matter for polity and governance as a channel of citizen participation between elections.

Example: the Committee on Petitions of the Lok Sabha

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Petrograd

Petrograd was the name given to St. Petersburg in 1914, when Russia renamed its capital to sound less German at the start of the First World War. The city was the nerve centre of the Russian Revolution, hosting the storming of the Winter Palace and the Bolshevik seizure of power in October 1917. Renamed Leningrad in 1924 after Lenin’s death, it matters for UPSC world history as the stage of the 1917 revolution.

Example: the October 1917 storming of the Winter Palace

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petroleum products, electricity, real estate and alcohol for human consumption

These are the commodities deliberately kept outside the GST net, continuing under the old excise, VAT and state-levy regimes. Their exclusion fragments the one nation, one tax design and keeps fuel and liquor as major state revenue sources. In UPSC GS-3 (fiscal federalism) they are the standard answer to the question of what is not covered by GST.

Example: Petrol and diesel, taxed through central excise and state VAT rather than GST

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PFBR

The Prototype Fast Breeder Reactor is a 500 MWe sodium-cooled fast reactor at Kalpakkam in Tamil Nadu, built by BHAVINI and designed to breed more plutonium fuel than it consumes. It is the centrepiece of Stage 2 of India's three-stage nuclear programme, converting the plutonium and depleted uranium produced in Stage 1 into fuel for thorium-based Stage 3 reactors. Its commissioning marks India's formal entry into fast-breeder technology.

Example: The PFBR's attainment of criticality represents India's entry into Stage 2 of Homi Bhabha's three-stage programme, unlocking the use of the country's thorium reserves.

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PFRDA

The Pension Fund Regulatory and Development Authority (PFRDA) is the statutory regulator for India's pension sector, established under the PFRDA Act, 2013. It regulates the National Pension System (NPS) and the Atal Pension Yojana, licenses pension fund managers and protects subscriber interests. It anchors the shift from defined-benefit to defined-contribution pensions in India.

Example: A central government employee joining service after 2004 builds retirement savings through NPS accounts regulated by PFRDA.

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PFRDA Act

The PFRDA Act is the short name of the Pension Fund Regulatory and Development Authority Act, 2013, which gave statutory status to the pension regulator. It empowers PFRDA to register and regulate pension funds, frame investment norms and safeguard the interests of subscribers under the National Pension System. It provides the legal foundation for India's contributory pension architecture.

Example: NPS fund managers operate under licences and investment guidelines issued by PFRDA under this Act.

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PFRDA Act, 2013

The Pension Fund Regulatory and Development Authority Act, 2013 is the statute that established PFRDA as India's pension regulator. Enacted in 2013, it authorises the Authority to promote, develop and regulate pension funds, protect the interests of subscribers, and adjudicate disputes in the National Pension System and related schemes. It completed the legal framework for the post-2004 defined-contribution pension regime.

Example: The Atal Pension Yojana's guaranteed minimum pension payouts are administered within the regulatory framework of this Act.

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Phad

Phad is the traditional scroll painting of Rajasthan, a long cloth narrative painted by the Chitera or Joshi community of Shahpura in Bhilwara district. Each phad unfolds the epic of a folk deity, most famously Pabuji and Devnarayan, sung by Bhopa priest-singers during all-night performances. The paintings use bold vegetable colours and a flat, crowded composition. UPSC art and culture lists phad among India’s major folk painting traditions.

Example: the phad of Pabuji, the Rajasthani folk deity

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Phanerozoic

Phanerozoic is the current geological eon, spanning roughly the last 541 million years to the present, and is divided into the Paleozoic, Mesozoic and Cenozoic eras. Its name means visible life, marking the appearance of abundant hard-shelled fossils after the Precambrian. It covers the rise of fish, dinosaurs, mammals and humans. UPSC geography asks eon and era sequences in physical geography, where Phanerozoic anchors the youngest end of the geological time scale.

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pharmaceutical pollution

Pharmaceutical pollution is the contamination of water and soil by drug residues from manufacturing effluents, hospital waste, improper disposal, and human excretion. Antibiotics in waterways are especially concerning because they can accelerate antimicrobial resistance in the environment. Manufacturing hubs with weak effluent treatment are major hotspots.

Example: The near-extinction of India's vultures after the veterinary painkiller diclofenac poisoned birds feeding on treated cattle carcasses, leading to its veterinary ban in 2006.

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pharmacogenomics

Pharmacogenomics is the study of how a person's genetic makeup affects their response to drugs, used to predict both efficacy and adverse reactions. It enables personalised medicine, in which drug choices and doses are tailored to a patient's genes rather than given one-size-fits-all. Regulatory agencies increasingly include pharmacogenomic information on drug labels.

Example: Testing for the HLA-B*1502 gene variant, common in Asian populations, before prescribing carbamazepine, since carriers face a high risk of severe skin reactions.

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Pharmacopoeia Commission for Indian Medicine and Homoeopathy

The Pharmacopoeia Commission for Indian Medicine and Homoeopathy (PCIM&H) is the body under the Ministry of AYUSH that develops official quality standards, monographs and formularies for Ayurveda, Siddha, Unani and Homoeopathy drugs. First set up as an autonomous body in 2010, it was re-established as a subordinate office of the Ministry in 2020 by merging it with the Pharmacopoeia Laboratory for Indian Medicine and the Homoeopathic Pharmacopoeia Laboratory, both at Ghaziabad.

Example: PCIM&H's published pharmacopoeial monographs define the identity, purity and strength tests that Ayurvedic, Siddha, Unani and Homoeopathy medicines must meet.

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Pharmacovigilance

the science of detecting, assessing and preventing adverse effects of medicines; India's Pharmacovigilance Programme suffers from low public and professional awareness.

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pharmacy of the world

Pharmacy of the world is the title given to India's pharmaceutical industry, the largest global supplier of generic medicines and vaccines by volume, serving affordable drugs to developing countries. Built on process-patent expertise and cost advantage, it proved vital during health crises. For UPSC GS-3 and GS-2 it anchors answers on industry, health diplomacy and IP policy.

Example: Vaccine Maitri, India's supply of Covid-19 vaccines to partner countries in 2021

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Phase 1 of Indian e-governance

Phase 1 of Indian e-governance is the computerisation phase, when government offices were first equipped with personal computers in the 1980s and 1990s. Work began with word processing and moved to data processing of records, elections, census and tax data, backed by institutions like the National Informatics Centre and NICNET. It matters for UPSC because governance answers trace India’s digital journey from isolated computerisation to today’s integrated platforms like DigiLocker and UPI.

Example: NICNET, the satellite-based computer network launched in 1987

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PHCs

Primary Health Centres (PHCs) are the first point of contact between a village community and a qualified medical officer in India's rural public-health system. Each PHC typically covers about 30,000 people in plain areas and 20,000 in hilly and tribal areas, providing curative, preventive and promotive care, and referring complex cases upward to Community Health Centres. Strengthening PHCs, now reimagined as Ayushman Arogya Mandirs, is central to primary healthcare reform.

Example: Immunisation sessions and antenatal check-ups in a block are usually organised through its PHC.

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Phenome India Project

a national project that collected 10,000 samples to build better predictive models for cardiometabolic diseases by linking measured traits to genetic risk.

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phenomenon mechanisms

Phenomenon mechanisms are the causal processes and interacting forces that produce a given phenomenon, the how behind the what. UPSC mains answers are expected to explain mechanisms rather than merely describe events, whether for monsoon formation or inflation. In GS-1, GS-3 and GS-4 it is a methodological demand for analytical depth in answers.

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Pherozeshah Mehta

Pherozeshah Mehta was a leading Moderate nationalist of Bombay, called the Lion of Bombay for his commanding role in municipal and national politics. A lawyer by profession, he presided over the 1890 Congress session at Calcutta, helped found the Bombay Presidency Association, and started the Bombay Chronicle newspaper in 1913. UPSC modern history remembers him as the archetypal Moderate who believed in constitutional agitation within the British system.

Example: the Bombay Chronicle, the newspaper he founded in 1913

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Philippines, Guam, and Puerto Rico

Philippines, Guam, and Puerto Rico are the three Spanish colonies the United States acquired under the Treaty of Paris of 1898, which ended the Spanish-American War. The transfer marked America’s emergence as an overseas imperial power, alongside the US protectorate over Cuba. For UPSC world history, the trio illustrates late-19th-century imperialism and the shift of global power from old European empires to the United States.

Example: the Treaty of Paris, signed in 1898

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Phillips curve

Phillips curve is the economic relationship showing an inverse trade-off between inflation and unemployment in the short run, first described by A. W. Phillips in 1958 from British wage data. Policymakers read it as a menu: lower unemployment can be bought only at the cost of higher inflation. UPSC economy questions use the curve, and its long-run vertical version from the expectations debate, to test understanding of inflation-unemployment policy dilemmas.

Example: A. W. Phillips’s 1958 study of British wages and unemployment

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Philosophy

Philosophy, in the UPSC context, is the disciplined inquiry into fundamental questions of knowledge, reality and right conduct, and it underpins the GS-4 ethics syllabus. Moral philosophy supplies the frameworks, such as deontology, consequentialism and virtue ethics, that aspirants use to reason through case studies. Indian philosophy, from the Upanishads to Gandhi, also feeds essay and ethics answers. It matters because ethical judgement in the syllabus is philosophy applied to administration.

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Phoenix Settlement

Phoenix Settlement was the commune Mahatma Gandhi founded in 1904 near Durban, South Africa, as a community living by simple, self-reliant ideals. It housed the printing press of Indian Opinion, the newspaper through which Gandhi conducted his political education of Natal’s Indians, and became a laboratory for satyagraha and trusteeship. UPSC modern history treats Phoenix, with Tolstoy Farm, as the South African cradle of Gandhian methods later used in India.

Example: Indian Opinion, the newspaper printed at Phoenix from 1904

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Phoney War of 1939-40

Phoney War of 1939-40 was the eight-month lull between Germany’s invasion of Poland in September 1939 and its attack on France in May 1940, when Britain and France declared war but fought almost no land battles in the west. Called the Sitzkrieg or Bore War, it ended with the German blitzkrieg through the Low Countries. UPSC world history uses it to explain the collapse of Allied strategy and the fall of France in 1940.

Example: Germany’s invasion of Poland in September 1939, which opened the period

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phosphorus cycle

The phosphorus cycle is the biogeochemical cycle by which phosphorus moves from rocks and soils into living organisms and back. Unlike carbon and nitrogen, it has no significant atmospheric component: phosphorus is released mainly by the weathering of phosphate-rich rocks, taken up by plants, passed through food webs, and returned to the soil through decomposition of dead matter and waste. Much of it eventually washes into rivers and oceans, where marine sediments lock it away for geological timescales.

Example: Phosphate fertilisers mined from rock phosphate deposits are applied to boost crop yields, while run-off of the same phosphorus into lakes causes eutrophication and algal blooms.

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photochemical (Los Angeles-type) smog

Photochemical smog, first identified in Los Angeles, forms when nitrogen oxides and volatile organic compounds from vehicles and industry react in strong sunlight. The reactions produce ground-level ozone, peroxyacetyl nitrates and aldehydes, creating a brownish haze that irritates the eyes and lungs. It is typical of warm, sunny cities with heavy traffic and peaks in the afternoon, unlike London-type smog, which is sulphur-based and forms in cold winter conditions.

Example: The brownish haze and eye irritation seen in Delhi on hot, sunny afternoons when vehicle exhaust reacts in intense sunlight to form ground-level ozone.

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photosphere

The photosphere is the visible surface of the Sun, the layer from which most of the sunlight we receive is emitted. It is about 5,500 degrees Celsius at its surface and only about 500 kilometres thick, though the Sun has no solid surface at all. Almost everything we observe of the Sun, including sunspots and granulation, is a feature of this layer.

Example: The sunspots tracked by India's Aditya-L1 solar mission are cooler, darker regions of the photosphere where strong magnetic fields suppress heat flow.

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phronesis

Phronesis is Aristotle's term for practical wisdom, the virtue of deliberating well about what is good and right in concrete situations and acting on it. Unlike abstract knowledge, it is learned through experience and habit. In UPSC GS-4 (ethics) it grounds discussions of moral reasoning, administrative discretion and the gap between knowing the good and doing it.

Example: Aristotle, who developed the concept in the Nicomachean Ethics

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Physical change

a change with no new substance formed; only state, shape or appearance alters. Examples: melting, boiling, tearing paper.

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Physical Research Laboratory (PRL)

The Physical Research Laboratory is a premier Indian research institution at Ahmedabad, founded in 1947 by Vikram Sarabhai and now a unit of the Department of Space. It works in space and atmospheric sciences, astronomy and astrophysics, planetary and geosciences, and earth sciences, and it has contributed instruments to ISRO's planetary missions.

Example: PRL built scientific payloads for Chandrayaan and Mangalyaan and operates the Mount Abu infrared observatory.

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PIB Fact Check Unit (2019)

The PIB Fact Check Unit, set up in 2019 under the Press Information Bureau, debunks fake news about the government on social media. A 2023 amendment making its fact-checks binding on intermediaries was stayed by the courts. It matters as the state's institutional response to disinformation.

Example: PIBFactCheck rebuttals of viral misinformation

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PIBOs

Producers, Importers and Brand Owners are the entities made legally responsible for the end-of-life management of plastic packaging under India's Extended Producer Responsibility (EPR) framework in the Plastic Waste Management Rules. Registered PIBOs must meet annual plastic-waste recycling targets or purchase recycling credits from registered recyclers. The concept makes the polluter pay by shifting waste-management cost to packaging originators.

Example: A fast-moving consumer goods company selling shampoo in plastic bottles must register as a PIBO and ensure an equivalent quantity of its packaging plastic is collected and recycled each year.

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Pichavaram

Pichavaram is one of India's largest mangrove forests, located in the Cuddalore district of Tamil Nadu between the Vellar and Coleroon estuaries. Its dense network of mangrove-lined tidal creeks supports rich biodiversity, serves as a nursery for fish and prawns, and buffers the coast against storms and erosion.

Example: Pichavaram's mangroves famously blunted the impact of the 2004 tsunami on nearby coastal villages, a widely cited case for mangrove-based coastal protection.

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Pick your method

Pick your method, in the UPSC context, is the practical advice that an aspirant should consciously choose the analytical approach that fits each question, rather than writing everything the same way. A polity question may need a constitutional-provisions method, an economy question a cause-effect method, and an ethics case study a stakeholder method. It matters because mains marks reward structured, method-led answers over undifferentiated information dumps.

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pidha deul

Pidha deul is the pyramidal, stepped-roof structure of the Kalinga school of Odisha temple architecture, built from horizontal receding tiers called pidhas and used for the assembly hall (jagamohana) rather than the sanctum. It contrasts with the curvilinear rekha deul over the shrine. In UPSC GS-1 (art and culture) it is a standard temple-architecture classification.

Example: The jagamohana of the Lingaraja temple at Bhubaneswar

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Piedmont-Sardinia

Piedmont-Sardinia was the Italian kingdom that led the unification of Italy in the 19th century. Under King Victor Emmanuel II and his minister Cavour, it modernised its army and economy, allied with France to expel Austria from Lombardy in 1859, and absorbed Garibaldi’s southern conquests to proclaim the Kingdom of Italy in 1861. UPSC world history pairs it with the German Zollverein story as the classic case of unification from above.

Example: the proclamation of the Kingdom of Italy in 1861 under Victor Emmanuel II

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pietra dura

Pietra dura is the art of inlaying precisely cut semi-precious stones such as lapis, jasper and carnelian into marble to form floral and geometric designs. Brought to perfection under the Mughals, it decorated imperial tombs and palaces. In UPSC GS-1 (art and culture) it marks the high Mughal phase of decorative architecture.

Example: The marble inlay work of the Taj Mahal at Agra

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PIL

Public Interest Litigation (PIL) is a petition filed in the Supreme Court under Article 32 or a High Court under Article 226 to enforce public rights, where the petitioner need not personally be the aggrieved party. Born from the Supreme Court's relaxation of locus standi in the early 1980s, it lets any public-spirited citizen seek judicial intervention on issues such as the environment, corruption or custodial violence. It is central to understanding judicial activism in India.

Example: The petitions that forced emission norms and CNG conversion for Delhi's public transport were filed as PILs.

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pilgrim tax

Pilgrim tax was a levy imposed on Hindus visiting sacred places of pilgrimage, collected at shrines and fairs under various regimes. Akbar abolished it in 1563 as part of his policy of religious tolerance. In UPSC GS-1 (medieval history) it illustrates discriminatory taxation and Akbar's sulh-i-kul approach to governing a multi-religious empire.

Example: Akbar's abolition of the pilgrim tax in 1563, followed by the abolition of jizya in 1564

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pillars or columns

Pillars or columns are free-standing vertical structural members that carry loads and, in Indian architecture, often serve as inscribed monuments or decorative elements. They range from Ashokan monoliths to carved temple mandapa columns. In UPSC GS-1 (art and culture) they are key markers of Mauryan polish, Gupta temple styles and Indo-Islamic arcades.

Example: The Ashokan pillar at Sarnath with its lion capital

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Pilot of Private Procurement and Stockist Scheme (PPSS)

PPSS is the pilot component of the PM-AASHA umbrella (2018) that let state governments involve private agencies in procuring notified oilseeds at MSP in selected districts or APMCs, with service charges capped at 15 percent of MSP. It was meant to extend price support where government procurement was thin. For UPSC it matters as an experiment in privatising MSP procurement, which was dropped in the 2024 PM-AASHA revamp after negligible private participation.

Example: The Union Cabinet's 2024 rejig of PM-AASHA scrapped PPSS because private firms found the 15 percent remuneration cap unviable during sharp price falls.

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Pingala

Pingala was the ancient Indian scholar of prosody who authored the Chandas Shastra, the foundational treatise on Sanskrit metre. In analysing metrical patterns, he described a binary system of short and long syllables, effectively an early binary number system, and outlined what is now called Pascal’s triangle. UPSC art and culture and science questions cite him to show India’s early contributions to mathematics and linguistics.

Example: the Chandas Shastra, his treatise on Sanskrit prosody

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Pink hydrogen

Pink hydrogen is hydrogen produced by splitting water through electrolysis powered by nuclear energy, either as electricity or process heat. Like green hydrogen it has near-zero operational carbon emissions, but its low-carbon credential rests on nuclear power rather than renewables; the colour label is an informal industry shorthand, not a regulatory standard.

Example: A nuclear power plant running an electrolyser to make hydrogen for steel or fertiliser production is producing pink hydrogen.

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Pink Revolution

The pink revolution is the modernisation of India's meat and poultry processing sector, improving slaughterhouses, cold chains, hygiene and export competitiveness, named in the colour-coded series of agricultural revolutions. It raised rural incomes but also ethical and environmental questions. For UPSC GS-3 (agriculture, food processing) it is a staple Prelims and Mains topic.

Example: India's rise as a major exporter of buffalo meat and poultry products

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pioneer species

Pioneer species are the hardy first colonisers that establish themselves on bare or disturbed land where no life existed before. They tolerate harsh conditions, low nutrients and extremes of temperature, and their growth adds organic matter and breaks up the substrate, making it habitable for later species. This process of ecological succession continues until a stable climax community develops.

Example: Lichens and mosses colonising bare rock after a volcanic eruption or a retreating glacier, slowly breaking the rock down into soil for grasses that follow.

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Pipa

Pipa is the traditional Chinese plucked lute, a pear-shaped wooden instrument with four strings and up to 31 frets, played for nearly two thousand years since the Han dynasty. Held upright and plucked with finger picks, it carries a virtuoso solo repertoire and features in opera ensembles, with famous pieces like Ambush from Ten Sides. For UPSC, it illustrates the musical cultures of China’s civilisation and the Silk Road exchanges that carried instruments across Asia.

Example: Ambush from Ten Sides, a classic pipa solo piece

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pipelines

Pipelines are long-distance conduits for oil, gas and water that shape energy security, trade routes and geopolitics far beyond their engineering. Cross-border pipelines bind supplier and consumer states in mutual dependence. In UPSC GS-2 and GS-3 they appear in questions on energy diplomacy, Central Asian connectivity and India's import dependence.

Example: The TAPI (Turkmenistan-Afghanistan-Pakistan-India) gas pipeline project

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Pir

Pir is the Sufi spiritual guide or saint to whom disciples, called murids, pledge allegiance in the master-disciple tradition of Islamic mysticism. The pir leads the Sufi order or silsila, interprets spiritual discipline, and his shrine or dargah often becomes a centre of pilgrimage after his death. UPSC medieval history and art and culture connect pirs with the spread of Sufism, communal harmony and the dargah culture of India.

Example: the dargah of Khwaja Muinuddin Chishti at Ajmer

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Pir Panjal

The Pir Panjal is the mountain range separating the Kashmir Valley from the Jammu plains, whose southern districts, Rajouri and Poonch, have seen a recent shift of militant activity. Dense forests and proximity to the LoC make it ideal for infiltration. It matters as the new geography of Kashmir militancy after 2021.

Example: Ambushes on Army convoys in Rajouri-Poonch since 2023

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pit dwellings

Pit dwellings are houses dug partly below ground level and roofed with thatch or timber, a Neolithic adaptation to cold climates and scarce building material. In India they are best known from the Kashmir valley. In UPSC GS-1 (ancient history) they mark early settled life and regional variation in the Neolithic.

Example: The pit houses of Burzahom in the Kashmir valley

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Pitalkhora

Pitalkhora is a group of 14 ancient Buddhist rock-cut caves in the Satmala range of Maharashtra, dating from the 3rd century BCE and counted among India’s earliest rock-cut monuments. The complex has four chaitya halls and the rest viharas, with inscriptions from about 250 BCE to the 3rd and 4th centuries CE recording donations. UPSC art and culture uses Pitalkhora, near Ellora, to anchor the chronology of Deccan cave architecture before Ajanta.

Example: Ptolemy’s “Petrigala”, identified with Pitalkhora

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Pitt's India Act of 1784

Pitt’s India Act of 1784 was the British law that created the dual system of control over the East India Company, placing political affairs under a parliamentary Board of Control while leaving commerce with the Court of Directors. It required the Governor-General in Council to superintend the Madras and Bombay presidencies in matters of war, diplomacy and revenue. UPSC polity traces to it the beginning of direct British parliamentary oversight of India.

Example: the Board of Control set up under the Act

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Pitt's India Act, 1784

Pitt’s India Act, 1784, was the statute that subjected the East India Company’s Indian administration to British parliamentary supervision through a six-member Board of Control. It distinguished the Company’s commercial functions from its political ones, and gave the Governor-General in Council authority over the other presidencies in war and diplomacy. For UPSC, it is the starting point of the constitutional development of British India, refined by the Charter Acts.

Example: the six-member Board of Control created by the Act

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Pixxel

Pixxel is an Indian private space-technology company founded in 2019 by Awais Ahmed and Kshitij Khandelwal at BITS Pilani, building a constellation of hyperspectral imaging satellites. Its satellites capture light across more than 135 narrow spectral bands at about 5-metre resolution, detecting crop disease, methane leaks, illegal mining and water stress that ordinary cameras cannot see, and it now operates the Firefly constellation launched aboard SpaceX missions.

Example: Pixxel's Firefly satellites sell daily hyperspectral imagery to clients in agriculture, mining, energy and defence, and the company leads the consortium building India's public-private Earth observation constellation under IN-SPACe.

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Piyadasi

Piyadasi is the title used by Emperor Ashoka in his edicts, usually in the full form Devanampiya Piyadasi, meaning beloved of the gods, of gracious mien. The Maski and Gujarra inscriptions first connected the title to Ashoka by name, solving a major historical puzzle. UPSC ancient history expects aspirants to recognise Piyadasi as Ashoka’s edictal name and to link his dhamma inscriptions with Mauryan administration.

Example: the Maski inscription, which names Ashoka as Devanampiya

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PL-480

PL-480 was the United States' Agricultural Trade Development and Assistance Act of 1954, under which India imported American foodgrain on concessional terms through the 1950s and 1960s. The shipments kept India fed during droughts but exposed its dependence on foreign food aid. It matters for UPSC because the humiliation of 'ship-to-mouth' existence drove India toward the Green Revolution and food self-sufficiency as a strategic goal.

Example: The Bihar drought of 1966-67, met largely with PL-480 wheat, is cited as the trigger for prioritising high-yielding varieties.

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place-of-supply rules

Place-of-supply rules are the GST provisions that decide which state gets the tax on a transaction by locating where a good or service is deemed to be consumed. They split supplies into intra-state (CGST plus SGST) and inter-state (IGST) levies. In UPSC GS-3 (GST, fiscal federalism) they explain why GST is a destination-based tax.

Example: A Bengaluru firm's software service billed to a Mumbai client, taxed as an inter-state supply under IGST

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Placement

Placement is the first stage of money laundering, in which illicit cash enters the financial system through deposits, purchases or smurfing. It is the riskiest stage for launderers because cash is traceable. Hawala transfers and mule accounts are common placement routes in India.

Example: Splitting drug cash into small bank deposits

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Places of Worship (Special Provisions) Act, 1991 is

The Places of Worship (Special Provisions) Act, 1991 is the law that freezes the religious character of every place of worship as it existed on 15 August 1947 and bars suits seeking its conversion. It exempts the Ram Janmabhoomi-Babri Masjid dispute and ancient monuments protected under the AMASR Act. It matters for UPSC as a live GS-2 topic on secularism, judicial review, and the balance between religious sentiment and constitutional values.

Example: the 15 August 1947 cut-off date for the religious character of places of worship

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plague

Plague is the bacterial disease caused by Yersinia pestis, infamous as the Black Death, which still occurs in parts of India and is a notified disease.

Example: the 1994 Surat plague outbreak triggered a national public-health emergency

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plague bonus

The plague bonus was an extra wage allowance paid to Ahmedabad's textile workers during the plague years, whose discontinuation by mill owners in 1918 sparked a wage dispute. Gandhi's intervention, including his first fast in India, won the workers a 35 per cent hike. In UPSC GS-1 (modern history) it opens the Ahmedabad mill strike, one of Gandhi's three early satyagrahas.

Example: The Ahmedabad mill strike of 1918

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plague epidemic that struck Bombay in 1896

The plague epidemic that struck Bombay in 1896 is the bubonic plague outbreak that hit the city in September 1896 and spread across western India, killing lakhs. The colonial state imposed harsh sanitary measures, house searches and forced segregation, which bred deep resentment. For UPSC GS-1 modern history, it marks the link between public health coercion and nationalism. Example: the assassination of plague commissioner W.C. Rand by the Chapekar brothers in Pune in 1897.

Example: the assassination of plague commissioner W.C. Rand by the Chapekar brothers in Pune in 1897

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Plan

In the UPSC context, 'Plan' refers to India's system of centralised economic planning: the Five-Year Plans formulated by the Planning Commission from 1951 to 2014, and the indicative, cooperative-federalism framework of NITI Aayog from 2015. Plans set growth targets, sectoral priorities and resource allocation. For UPSC the arc from the First Plan (Harrod-Domar model) to plan holidays, rolling plans and the shift to NITI Aayog is a core economy topic.

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Plan Holiday (1966-69)

Plan Holiday (1966-69 refers to the three-year gap in Five-Year planning when India abandoned the Fourth Plan and ran three Annual Plans instead. The Third Plan had collapsed under the 1962 and 1965 wars, severe droughts and the 1966 rupee devaluation, so planning was paused to stabilise the economy. UPSC economy treats the Plan Holiday as the key example of how wars, monsoon failure and fiscal stress can derail planned development.

Example: the 1966 devaluation of the rupee, a trigger for the pause

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Plan Holidays

Plan Holidays is the term for periods when India suspended Five-Year planning and ran Annual Plans instead, most notably the 1966-69 holiday after the Third Plan failed. Droughts, the wars of 1962 and 1965, and the 1966 devaluation forced the pause until the Fourth Plan began in 1969. UPSC economy uses Plan Holidays to illustrate the vulnerability of centralised planning to external shocks like war and monsoon failure.

Example: the Fourth Plan (1969-74), which resumed Five-Year planning

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Plan Holidays (1966-69)

Plan Holidays (1966-69 denotes the specific three-year suspension of Five-Year planning between the Third and Fourth Plans, filled by Annual Plans for 1966-67, 1967-68 and 1968-69. The break followed the Third Plan’s derailment by war, drought and the rupee devaluation. For UPSC prelims, the dates 1966 to 1969 are the must-remember facts, and the episode is the standard illustration of planning interrupted by crisis.

Example: the Annual Plan of 1966-67, the first of the three stopgap plans

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Plan vs Non-Plan divide was abolished

Plan vs Non-Plan divide was abolished in the Union Budget of 2017-18, ending the decades-old classification of government expenditure into Plan and Non-Plan heads. The merger, recommended to simplify budgeting and focus on outcomes, came alongside the advance of the budget date to 1 February and the merger of the Railway Budget. UPSC economy notes it as part of the post-Planning Commission budget reforms after NITI Aayog replaced the Commission.

Example: the Union Budget of 2017-18, which carried the merged classification

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Planck's law

Planck's law describes how a black body, a perfect absorber and emitter of radiation, radiates energy across wavelengths at a given temperature, with emission peaking at shorter wavelengths as the temperature rises. Published by Max Planck in 1900, it resolved the ultraviolet catastrophe of classical physics and founded quantum theory by proposing that energy is emitted in discrete packets called quanta.

Example: The law explains why a heated iron rod glows red, then orange, then white as its temperature rises.

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planetary boundaries

Planetary boundaries are nine scientifically defined limits within which humanity can safely operate without destabilising the Earth system. The framework, developed by Johan Rockstrom and colleagues at the Stockholm Resilience Centre in 2009, covers limits such as climate change, biodiversity loss, freshwater use, and nitrogen and phosphorus flows. Crossing these boundaries raises the risk of abrupt, large-scale and irreversible environmental change.

Example: The 2023 update of the framework found that six of the nine boundaries had already been crossed, including biosphere integrity and the flow of novel entities such as plastics.

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planetary defence

Planetary defence is the set of efforts to detect, track and, if needed, deflect near-Earth asteroids and comets that could threaten Earth. It combines sky surveys that catalogue potentially hazardous objects with deflection techniques such as kinetic impactors and gravity tractors. International coordination happens through bodies like the UN-endorsed International Asteroid Warning Network.

Example: NASA's DART mission in September 2022 deliberately crashed into the asteroid Dimorphos and shortened its orbit around Didymos by about 33 minutes, proving that a kinetic impactor can deflect an asteroid.

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Planetary Defense Coordination Office

The Planetary Defense Coordination Office (PDCO) is NASA's office, established in January 2016, that coordinates the search for potentially hazardous near-Earth objects and plans responses to impact threats. It manages the NEO Observations Program, issues impact warnings, and backed missions such as DART, the first test of deflecting an asteroid by kinetic impact, and the NEO Surveyor telescope.

Example: The PDCO oversaw NASA's DART mission, which in September 2022 slammed into the asteroid moonlet Dimorphos and successfully altered its orbit, proving kinetic deflection works.

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Planned Economy for India

Planned Economy for India is a 1934 book by engineer-statesman M. Visvesvaraya that proposed a ten-year national plan to double India's income through industrialisation and state-led investment. Written before independence, it was one of the earliest blueprints for economic planning in India and influenced the Five Year Plans adopted after 1950.

Example: Visvesvaraya's call for planned industrial growth in 1934 foreshadowed the Planning Commission's approach to development after independence.

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Planning Commission

The Planning Commission was India's central planning body, created by a Cabinet resolution on 15 March 1950 to formulate Five-Year Plans beginning in 1951, with the Prime Minister as chairperson. It directed public investment toward heavy industry and infrastructure but was criticised as top-down and rigid. It was replaced by NITI Aayog on 1 January 2015.

Example: the Second Plan's Mahalanobis model prioritised heavy industrialisation

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Planning Commission (1950-2014)

Planning Commission (1950-2014 was the central planning body set up by a Cabinet resolution on 15 March 1950 to formulate India’s Five-Year Plans. Chaired by the Prime Minister, it allocated resources across sectors and states for over six decades, producing twelve Five-Year Plans. It was replaced by NITI Aayog on 1 January 2015. UPSC treats the Commission as the institutional face of the Nehruvian era of state-led development.

Example: NITI Aayog, which replaced the Commission on 1 January 2015

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plant physiology

Plant physiology is the branch of botany that studies how plants function: how they photosynthesise, transport water and nutrients, grow, flower and respond to stress. It explains processes such as transpiration, hormone signalling and seed germination at the cellular and whole-plant level. Its findings underpin crop breeding, irrigation scheduling and agricultural biotechnology.

Example: Breeding drought-tolerant wheat varieties by understanding how leaf stomata close to conserve water during moisture stress.

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Plastic waste

Plastic waste is discarded plastic material, from packaging and carry bags to multilayered sachets, that persists in the environment for decades because most plastics do not biodegrade. Mismanaged plastic waste clogs drains, harms marine life and livestock, and breaks down into microplastics that enter food chains.

Example: Single-use plastic packaging collected in cities is the main feedstock for the recycling targets set under India's Extended Producer Responsibility regime.

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Plastic Waste Management Rules, 2016

Notified under the Environment (Protection) Act, 1986, these rules replaced the 2011 plastic rules and made waste generators, local bodies and producers jointly responsible for plastic waste. They introduced Extended Producer Responsibility for producers, importers and brand owners, phased out plastic carry bags below 50 microns in thickness, and set duties for segregation, collection and recycling.

Example: Under the rules, urban local bodies must ensure segregated collection of plastic waste, and open burning of plastic is prohibited.

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Plate boundaries

Plate boundaries are the zones where tectonic plates meet, classified as divergent, convergent and transform. Divergent boundaries pull apart and create new crust, as at mid-ocean ridges; convergent boundaries collide, forming mountains or subduction trenches; transform boundaries slide past each other, causing earthquakes. UPSC geography centres earthquakes, volcanoes and fold mountains on these three boundary types, making the classification a prelims staple.

Example: the Mid-Atlantic Ridge, a divergent boundary

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platform concentration

Platform concentration is the tendency of users, sellers and transaction volumes to cluster on a handful of dominant digital platforms because of network effects, data advantages and winner-takes-most dynamics. It raises entry barriers for new firms, gives gatekeepers pricing and rule-setting power, and creates single points of failure. For UPSC GS-3 economy, it frames debates on competition law and Big Tech regulation. Example: PhonePe and Google Pay together handling the bulk of India's UPI transaction volume.

Example: PhonePe and Google Pay together handling the bulk of India's UPI transaction volume

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platform technology

A platform technology is a foundational technology whose applications cut across many industries and products rather than serving a single sector. Because an advance in the platform improves everything built on it, public investment in it yields economy-wide returns. Policy documents treat nanotechnology, semiconductors and artificial intelligence as platform technologies of this kind.

Example: Nanotechnology applied simultaneously in nano-fertilisers for agriculture, targeted drug delivery in medicine and nano-electronics in computing.

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platinum-based catalysts

Platinum-based catalysts use the metal platinum to speed up chemical reactions without being consumed in them. Platinum's surface readily adsorbs hydrogen and oxygen, making it the standard catalyst for fuel cells and automotive catalytic converters. Its high cost and scarcity drive research into platinum-alloy and platinum-free alternatives.

Example: The proton-exchange-membrane fuel cells used in hydrogen vehicles, where platinum catalysts at the electrodes split hydrogen and combine it with oxygen to generate electricity.

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Plato

Plato was the classical Greek philosopher, student of Socrates and teacher of Aristotle, who founded the Academy at Athens around 387 BCE. His dialogues, above all the Republic, set out the theory of Forms, the philosopher-king ideal and a vision of justice that shaped Western political thought. UPSC philosophy optional and essay papers invoke Plato whenever ideal states, justice or the rule of the wise are discussed.

Example: the Republic, his dialogue on justice and the ideal state

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playa lakes

Playa lakes are shallow, temporary lakes that form in flat desert basins and dry up between rains, leaving salt flats or playas. They are fed by episodic runoff rather than permanent rivers, so their water is often saline and their beds accumulate evaporite minerals. For UPSC GS-1 physical geography, they illustrate arid-region hydrology and landforms. Example: Sambhar Lake in Rajasthan, India's largest inland saline lake, which fills seasonally.

Example: Sambhar Lake in Rajasthan, India's largest inland saline lake, which fills seasonally

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plebiscite

A plebiscite is a direct vote by the electorate of a region on a single political question, such as sovereignty or accession, rather than an election of representatives. It is invoked in international disputes where the will of the people is meant to settle a contested claim. For UPSC it is tied to the Kashmir question and self-determination debates.

Example: United Nations Security Council Resolution 47 of 1948 called for a plebiscite in Jammu and Kashmir after demilitarisation.

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pledging gold reserves abroad

Pledging gold reserves abroad is the emergency measure by which a central bank ships or hypothecates its gold to foreign banks as collateral for hard-currency loans. In May-July 1991 the RBI moved 20 tonnes of gold to the Union Bank of Switzerland and about 47 tonnes to the Bank of England, raising roughly 600 million dollars during the balance-of-payments crisis. For UPSC GS-3, it anchors the 1991 crisis narrative. Example: the Chandra Shekhar government's May 1991 gold shipment to Switzerland.

Example: the Chandra Shekhar government's May 1991 gold shipment to the Union Bank of Switzerland

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PLFS

The Periodic Labour Force Survey (PLFS) is the National Statistical Office's household survey, launched in 2017, that measures employment in India. It reports the Labour Force Participation Rate (LFPR), Worker Population Ratio (WPR) and Unemployment Rate (UR), giving quarterly estimates for urban areas and annual estimates for rural and urban India combined. For UPSC it is the primary official source on jobs data and the basis of debates on unemployment, informality and female workforce participation.

Example: The PLFS 2023-24 round reporting a rural female LFPR above 40 percent became central to the policy debate on whether women's workforce entry was rising.

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PLI scheme for drones

The PLI scheme for drones and drone components is a Production Linked Incentive scheme announced in September 2021, following the liberalised Drone Rules, 2021, with a total outlay of Rs 120 crore over three financial years. It pays manufacturers an incentive of 20 per cent of value addition, targeting Rs 5,000 crore of investment, over Rs 1,500 crore of incremental production and about 10,000 direct jobs, with low eligibility thresholds so MSMEs and startups can participate.

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PLI scheme for food processing

The PLI scheme for food processing (PLISFPI) is a Central Sector scheme that pays firms incentives linked to growth in sales of processed food products. Approved by the Cabinet on 31 March 2021 with a Rs 10,900 crore outlay for 2021-22 to 2026-27, it covers ready-to-eat foods, processed fruits and vegetables, marine products, mozzarella cheese, SME organic products and overseas branding of Indian brands. For UPSC it matters as the flagship manufacturing-and-exports case study under GS-3.

Example: Approved by the Union Cabinet on 31 March 2021 with a Rs 10,900 crore outlay

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PLI scheme for solar PV manufacturing

The Production Linked Incentive scheme for the National Programme on High Efficiency Solar PV Modules, administered by the Ministry of New and Renewable Energy, which offers incentives linked to domestic sales of high-efficiency modules. Approved in Tranche-II in September 2022 with an outlay of Rs 19,500 crore (following Tranche-I of Rs 4,500 crore), it targets about 65,000 MW per annum of fully or partially integrated manufacturing capacity to reduce India's dependence on solar imports. Incentives are tied to local content and module efficiency.

Example: Letters of Award under the scheme committed 11 manufacturers to build fully or partially integrated solar PV manufacturing capacity in India.

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PLI scheme for telecom and networking products

The Production Linked Incentive scheme notified by the Department of Telecommunications in February 2021 with an outlay of Rs 12,195 crore to boost domestic manufacturing of telecom and networking equipment. It offers incentives of 4 to 7 percent on incremental sales over five years, with an extra 1 percent for design-led manufacturing, covering products from 4G/5G equipment to optical transmission gear. It is a key instrument of Atmanirbhar Bharat in the telecom sector.

Example: Companies such as Tejas Networks and Nokia have manufactured and exported telecom equipment from India under the scheme's incentive framework.

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Pliny the Elder

Pliny the Elder was the Roman author of the Natural History, a 37-book encyclopedia completed around 77 CE that is a key source on Indo-Roman trade. He famously complained that Rome’s appetite for Indian pepper, pearls and muslins drained the empire of gold. He died in 79 CE during the eruption of Vesuvius. UPSC ancient history cites him as external evidence for India’s maritime trade with the Roman world.

Example: the Natural History (c. 77 CE), his 37-book encyclopedia

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ploughed field at Kalibangan

The ploughed field at Kalibangan is the excavated agricultural field at the Harappan site in Hanumangarh district, Rajasthan, dated to about 2800 BCE, the earliest ploughed field known from excavation. It shows two sets of furrows crossing at right angles, indicating two crops grown together, probably a grain and a pulse. For UPSC GS-1 ancient history, it proves plough agriculture in the Early Harappan phase. Example: the 1961-69 excavations by B.B. Lal and B.K. Thapar.

Example: the 1961-69 excavations by B.B. Lal and B.K. Thapar

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plural society

A plural society is a society in which distinct ethnic or cultural groups live side by side but remain socially separate, meeting mainly in the marketplace, as theorised by J.S. Furnivall for colonial South-East Asia. It is held together by economic force rather than shared values, with the colonial state as the only common institution. For UPSC GS-1 society, it frames colonial social structure and communalism. Example: colonial Burma, the case Furnivall studied.

Example: colonial Burma, the case Furnivall studied

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pluripotent

Pluripotent cells are stem cells that can develop into almost any cell type of the body, though not the placenta and supporting tissues. The main natural examples are embryonic stem cells, while induced pluripotent stem cells are created in the laboratory by reprogramming adult cells. Their ability to become neurons, heart muscle or blood cells makes them the foundation of regenerative medicine research.

Example: Shinya Yamanaka's 2006 reprogramming of adult skin cells into induced pluripotent stem cells, for which he shared the 2012 Nobel Prize in Physiology or Medicine.

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Pluvial (urban) floods

Pluvial or urban floods are floods caused directly by intense rainfall ponding on surfaces, independent of river overflow. Concretised cities with poor drainage are most vulnerable.

Example: Hyderabad's 2020 rains caused pluvial flooding across the city within hours

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PM AJAY

The Pradhan Mantri Anusuchit Jaati Abhyuday Yojana (PM AJAY) is the Ministry of Social Justice and Empowerment's umbrella scheme for Scheduled Caste welfare, launched in 2021-22 by merging three earlier schemes. It funds Adarsh Gram development in villages with a large SC population, hostels for SC students, and income-generating projects aimed at reducing SC poverty. It is the flagship convergence scheme for SC development.

Example: A village with a majority SC population can get its infrastructure gaps in water, roads and community halls filled under PM AJAY's Adarsh Gram component.

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PM Awas

PM Awas is the colloquial short form of the Pradhan Mantri Awas Yojana (PMAY), the Centre's Housing for All programme. It provides central assistance to eligible urban and rural households for building or buying a pucca house, converging with schemes for toilets, LPG, electricity and water connections. The term appears in political and media discussion as shorthand for the housing mission.

Example: A beneficiary saying she got a house under PM Awas is referring to assistance received through the Pradhan Mantri Awas Yojana.

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PM Awas Yojana

The Pradhan Mantri Awas Yojana (PMAY) is the Centre's Housing for All programme, launched in 2015 with urban and rural verticals. It gives central assistance to eligible households for constructing or purchasing a pucca house, converging with toilets, LPG, electricity and water connections, and it has sanctioned crores of houses since launch, with PMAY-Urban 2.0 approved in 2024. It is the largest state-led housing intervention in India.

Example: A landless rural family receiving assistance to build a concrete house with a toilet is a PMAY-Gramin beneficiary.

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PM DAKSH

The Pradhan Mantri Dakshta Aur Kushalta Sampann Hitgrahi (PM-DAKSH) Yojana is the Ministry of Social Justice and Empowerment's skill-development scheme for Scheduled Castes, Other Backward Classes, Economically Backward Classes, de-notified tribes and safai karamcharis, running since 2020-21. It offers free short-term, long-term, upskilling and entrepreneurship training through a dedicated portal and mobile app launched in 2021. It links social justice directly with employability.

Example: A safai karamchari can enrol for recognition-of-prior-learning training in sanitation work through the PM-DAKSH portal.

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PM Formalisation of Micro Food Processing Enterprises (PMFME)

PMFME, the PM Formalisation of Micro Food Processing Enterprises scheme, supports unorganised food-processing micro-units with credit, training and branding under the Atmanirbhar Bharat push. It formalises the informal food economy. It is the essay's instrument for the micro-enterprise theme.

Example: The scheme formalising micro food-processing enterprises.

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PM Garib Kalyan Anna Yojana

PM Garib Kalyan Anna Yojana is the free-foodgrain scheme under which NFSA beneficiaries receive 5 kg of foodgrains per person per month at no cost. Launched during the Covid-19 lockdowns, it was extended for five years from January 2024 to December 2028, covering about 81.35 crore people at an estimated cost of Rs 11.8 lakh crore. It matters for UPSC as the core food-security and fiscal-burden case study in GS-2 and GS-3.

Example: Extended for five years from January 2024 to December 2028, covering about 81.35 crore NFSA beneficiaries

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PM Gati Shakti

PM Gati Shakti is a national infrastructure master plan that brings 16 ministries, including railways, roads, ports and energy, onto one digital platform for coordinated project planning. Launched on 13 October 2021, it rests on seven engines such as railways, highways and logistics, with a stated ambition of Rs 100 lakh crore of investment. It matters for UPSC as the anchor example of infrastructure-led growth in GS-3.

Example: Launched on 13 October 2021

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PM Gati Shakti National Master Plan

The PM Gati Shakti National Master Plan is the full name of the government's integrated infrastructure planning initiative launched on 13 October 2021. It layers geospatial data from central ministries, states and departments so that projects are planned together rather than in silos, cutting delays and cost overruns. For UPSC it matters as the standard mains example of technology-enabled governance and logistics reform.

Example: Brings 16 Union ministries onto a single geospatial planning platform

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PM GatiShakti GIS platform

PM GatiShakti is the National Master Plan for multi-modal connectivity, launched in October 2021, built around a GIS digital platform that layers infrastructure data from central ministries and states. It enables integrated, corridor-based planning of roads, rail, ports and logistics so projects are coordinated instead of planned in silos. For UPSC it matters as the flagship shift from sector-wise to whole-of-government infrastructure planning, and as the data backbone for the National Logistics Policy.

Example: The platform's mapping of economic zones and existing assets is used to prioritise Bharatmala and Sagarmala projects on common corridors.

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PM Gram Sadak Yojana

The Pradhan Mantri Gram Sadak Yojana (PMGSY), launched in December 2000, is the Centre's rural roads programme to connect every eligible unconnected habitation by all-weather road. Implemented by the Ministry of Rural Development, it initially targeted habitations of 500 or more people (250 or more in hill, tribal and desert areas), with later phases upgrading existing rural roads. Rural connectivity remains a staple UPSC topic.

Example: A remote village's first pucca link to the nearest market town typically comes through PMGSY.

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PM Internship Scheme

The PM Internship Scheme is a government programme that places youth aged 21 to 24 in 12-month internships with top companies selected by CSR spending. Announced in Budget 2024-25 and launched on pilot in October 2024, interns receive Rs 5,000 a month (Rs 4,500 from government, Rs 500 from the company) plus a one-time Rs 6,000 grant, targeting one crore internships over five years. It matters for UPSC as the key employment and skill-bridging scheme in GS-3.

Example: Pilot launched in October 2024 targeting the top 500 companies by CSR expenditure

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PM Jan Dhan accounts crossed 55.7 crore

This milestone refers to accounts under the Pradhan Mantri Jan Dhan Yojana crossing 55.7 crore in early 2025, on the way to 56.16 crore by August 2025. Launched on 28 August 2014, the scheme gives every unbanked household a zero-balance account with a RuPay debit card, Rs 2 lakh accident insurance and overdraft up to Rs 10,000. It matters for UPSC as the foundational financial-inclusion and DBT-delivery statistic.

Example: 56.16 crore accounts by August 2025, the scheme's 11th anniversary

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PM JI-VAN Yojana

Pradhan Mantri JI-VAN (Jaiv Indhan-Vatavaran Anukool fasal awashesh Nivaran) Yojana, notified in March 2019 by the Ministry of Petroleum and Natural Gas, provides viability gap funding for second-generation (2G) ethanol projects using lignocellulosic biomass such as crop residue. With an outlay of Rs 1,969.50 crore for 2018-19 to 2023-24, it supports 12 commercial and 10 demonstration plants, helping India meet its ethanol blending targets while reducing stubble burning and import dependence. It aligns with the National Policy on Biofuels, 2018.

Example: The 2G ethanol plant at Panipat in Haryana, built by IndianOil, converts rice straw into ethanol for blending with petrol under the Ethanol Blended Petrol programme.

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PM Khanij Kshetra Kalyan Yojana

The Pradhan Mantri Khanij Kshetra Kalyan Yojana (PMKKKY), launched in 2015, directs mining wealth back to mining-affected areas. Implemented through District Mineral Foundations funded by a share of mining royalties, it finances drinking water, health, education, roads and livelihood projects for affected communities. It embodies the principle that mineral-bearing regions must share in mining revenues.

Example: A District Mineral Foundation building school infrastructure in a coal-mining district is spending PMKKKY money.

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PM Kisan Sampada Yojana

PM Kisan Sampada Yojana is the Ministry of Food Processing Industries' umbrella central scheme for building food-processing infrastructure. It bundles sub-schemes such as Mega Food Parks, integrated cold chains, agro-processing clusters and food-safety infrastructure, aiming to cut post-harvest losses and raise farmer incomes through value addition. For UPSC it matters as the standard scheme linking agriculture, industry and rural employment in GS-3.

Example: Launched in 2017 as SAMPADA and later renamed PM Kisan Sampada Yojana

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PM Matru Vandana Yojana

The Pradhan Mantri Matru Vandana Yojana (PMMVY) is a maternity-benefit scheme giving Rs 5,000 in instalments to pregnant and lactating mothers for their first child, paid through direct benefit transfer. Run by the Ministry of Women and Child Development since 2017 and now part of Mission Shakti, it partly compensates wage loss so mothers can rest before and after delivery and seek proper nutrition.

Example: A woman registering her first pregnancy at an anganwadi receives the benefit in instalments linked to antenatal check-ups.

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PM Matsya Kisan Samridhi Sah-Yojana

PM Matsya Kisan Samridhi Sah-Yojana (PM-MKSSY) is a Central Sector sub-scheme under PM Matsya Sampada Yojana approved by the Cabinet on 8 February 2024. With a Rs 6,000 crore outlay over FY 2023-24 to 2026-27 (half public finance, half private investment), it formalises the fisheries sector through a National Fisheries Digital Platform, aquaculture insurance incentives and performance grants for micro and small enterprises. It matters for UPSC as the Blue Economy and formalisation case study in GS-3.

Example: Cabinet approval on 8 February 2024

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PM POSHAN

PM POSHAN (PM Poshan Shakti Nirman) is the 2021 rechristening of the Mid-Day Meal scheme, among the world's largest school-feeding programmes. It provides hot cooked meals to children from pre-primary to Class 8 in government and aided schools to improve nutrition, attendance and enrolment, with added features such as school nutrition gardens and social audits. It sits at the intersection of education and nutrition policy.

Example: The hot khichdi served in a government primary school at lunch is supplied under PM POSHAN.

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PM SHRI

PM SHRI (PM Schools for Rising India), announced in 2022, upgrades 14,500 schools across India as exemplar institutions implementing the National Education Policy 2020. These schools showcase competency-based pedagogy, modern infrastructure and green practices, and are expected to mentor neighbouring schools. They form the demonstration layer of NEP 2020.

Example: A PM SHRI school in a district mentors nearby schools on activity-based, competency-driven teaching.

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PM Surya Ghar

A widely used shorthand for the PM Surya Ghar Muft Bijli Yojana, the central scheme promoting rooftop solar installations on households. It is the national programme under which one crore households are targeted for rooftop solar with central financial assistance and 300 units of free electricity per month. See the full entry on PM Surya Ghar Muft Bijli Yojana for scheme details.

Example: Government communications and media routinely use PM Surya Ghar as shorthand for the rooftop solar scheme launched in February 2024.

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PM Surya Ghar Muft Bijli Yojana

Launched in February 2024 with an outlay of Rs 75,021 crore, the scheme aims to install rooftop solar systems on one crore households, giving them 300 units of free electricity per month. It provides subsidies of up to Rs 78,000 per household, combined with low-interest bank loans and a national vendor portal, to scale residential solar adoption and reduce grid demand. It is the world's largest domestic rooftop solar initiative.

Example: A household installing a 2 kW rooftop system under the scheme receives a central subsidy of Rs 60,000 and can substantially offset its monthly electricity bill.

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PM SVANidhi

The PM Street Vendor's AtmaNirbhar Nidhi (PM SVANidhi), launched in June 2020, gives collateral-free working-capital loans to street vendors hit by the Covid lockdown. Starting at Rs 10,000 and rising on timely repayment, the loans carry interest subsidy and cashback on digital transactions, and the scheme is run by the Ministry of Housing and Urban Affairs. It is the flagship urban-livelihood credit scheme.

Example: A vegetable-cart vendor restarting business after the lockdown could take a Rs 10,000 PM SVANidhi loan.

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PM Ujjwala

PM Ujjwala Yojana is the clean-cooking scheme that gives deposit-free LPG connections to poor households. Launched on 1 May 2016 at Ballia in Uttar Pradesh, it shifted millions of women away from firewood and dung, cutting indoor air pollution, and was expanded through Ujjwala 2.0 in 2021. For UPSC it matters as the flagship women-health and energy-access intervention in GS-1, GS-2 and GS-3.

Example: Launched on 1 May 2016 at Ballia, Uttar Pradesh

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PM Ujjwala Yojana

The Pradhan Mantri Ujjwala Yojana, launched in May 2016, provides deposit-free LPG connections to adult women of poor households to replace smoky chulhas. By cutting indoor air pollution it targets the health of women and children, with Ujjwala 2.0 in 2021 extending coverage to migrant households. It links energy access with public health and gender equity.

Example: A rural household receiving its first LPG cylinder with a two-burner stove typically gets it under Ujjwala.

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PM VIKAS

The Pradhan Mantri Virasat Ka Samvardhan (PM VIKAS) is the Ministry of Minority Affairs' umbrella scheme for minority communities, created by converging five earlier schemes including Seekho aur Kamao and USTTAD. It combines skill development, education, women's leadership and entrepreneurship support with credit and market linkages, aimed especially at artisan communities. It represents the shift from scattered schemes to convergence in minority welfare.

Example: A minority artisan learning modern design and marketing for traditional crafts may be trained under PM VIKAS.

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PM Vishwakarma

PM Vishwakarma is a central scheme launched on 17 September 2023 to support 18 traditional crafts and trades such as carpentry, pottery and tailoring. With a Rs 13,000 crore outlay, it gives artisans a PM Vishwakarma certificate and ID card, basic and advanced skill training with stipend, toolkit incentives and collateral-free enterprise loans. It matters for UPSC as the flagship formalisation-of-informal-labour and skilling scheme.

Example: Launched on 17 September 2023 covering 18 traditional trades

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PM YASASVI

The PM Young Achievers Scholarship Award Scheme for Vibrant India (PM YASASVI) funds top-class school education for OBC, EBC and de-notified tribe students. Run by the Ministry of Social Justice and Empowerment, it gives up to Rs 75,000 a year for Classes 9 and 10 and up to Rs 1,25,000 for Classes 11 and 12 to students with family income up to Rs 2.5 lakh, disbursed through direct benefit transfer via the National Scholarship Portal.

Example: A meritorious OBC student entering Class 11 in a reputed school can have tuition and hostel fees covered under YASASVI.

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PM-AASHA

PM-AASHA (Pradhan Mantri Annadata Aay Sanrakshan Abhiyan) is the 2018 umbrella scheme guaranteeing remunerative prices to farmers. It combines the Price Support Scheme for physical procurement, the Price Deficiency Payment Scheme that pays farmers the gap between MSP and market price, and a private-procurement component. It matters for UPSC as the core MSP-implementation mechanism linking agricultural pricing to farmer incomes in GS-3.

Example: Approved by the Cabinet in September 2018

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PM-Ayushman Bharat Health Infrastructure Mission

The PM-Ayushman Bharat Health Infrastructure Mission is the central scheme to strengthen public-health infrastructure: health and wellness centres, district labs, critical-care blocks and surveillance.

Example: the mission funds critical-care hospital blocks in every district

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PM-DevINE

PM-DevINE, the Prime Minister's Development Initiative for North East Region, is the central sector scheme launched in 2022 to fund infrastructure and social development projects in the North-East. It matters as the dedicated funding vehicle for closing the region's development gap.

Example: PM-DevINE funding for bamboo and tourism infrastructure

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PM-JANMAN

PM-JANMAN (Pradhan Mantri Janjati Adivasi Nyaya Maha Abhiyan) is a central scheme launched on 15 November 2023 to bring basic amenities to Particularly Vulnerable Tribal Groups (PVTGs), India's most marginalised tribal communities. Covering all 75 PVTGs, it funds housing, roads, piped water, electricity, health, and education through nine ministries with a Rs 24,000 crore outlay. It matters for UPSC as the flagship of targeted tribal welfare under the welfare-state and social-justice syllabus.

Example: PM-JANMAN's doorstep delivery of housing and connectivity to PVTG hamlets is used as a current-affairs case in tribal-development answers.

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PM-JAY

PM-JAY (Ayushman Bharat Pradhan Mantri Jan Arogya Yojana) is the world's largest health assurance scheme, giving each eligible family Rs 5 lakh a year of cashless hospital cover. Launched in September 2018, it covers roughly 55 crore people from poor and vulnerable households, and was extended in 2024 to all senior citizens aged 70 and above. It matters for UPSC as the centrepiece of health and social-security answers in GS-2.

Example: National rollout on 23 September 2018

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PM-KISAN

PM-KISAN is the income-support scheme paying 6,000 rupees a year in three instalments to landholding farmer families. It is the essay's direct-transfer instrument for farm welfare. It represents the state's cash answer to agrarian distress.

Example: The 6,000-rupee annual income support to farmer families.

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PM-KUSUM

PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan) is the 2019 scheme that solarises Indian agriculture. Component A sets up 10,000 MW of decentralised solar plants on barren land, Component B installs 17.5 lakh standalone solar pumps, and Component C solarises grid-connected pumps so farmers can sell surplus power. It matters for UPSC as the flagship energy-agriculture and climate-mitigation link in GS-3.

Example: Component B targets 17.5 lakh standalone solar pumps

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PM-POSHAN

PM-POSHAN (Pradhan Mantri Poshan Shakti Nirman) is the renamed and expanded mid-day meal scheme approved in September 2021 for 2021-22 to 2025-26. It provides hot cooked meals to about 11.8 crore children in classes 1 to 8, adding nutrition gardens in schools, a supplementary nutrition component for aspirational districts and tighter monitoring. It matters for UPSC as the flagship school-nutrition and human-capital scheme in GS-2.

Example: Approved in September 2021 with a central outlay of about Rs 54,000 crore

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PM-PRANAM

PM-PRANAM (PM Programme for Restoration, Awareness, Nourishment and Amelioration of Mother Earth) is the 2023 scheme that rewards states for reducing chemical-fertiliser use. Half the fertiliser-subsidy savings are shared with states as grants for promoting alternative fertilisers and natural farming. For UPSC it is the incentive-based answer to the urea-overuse crisis.

Example: A state that cuts urea consumption by promoting nano-urea and compost earns PM-PRANAM grants for rural assets.

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PM-SYM (Shram Yogi Maan-dhan)

PM-SYM (Pradhan Mantri Shram Yogi Maan-dhan) is a voluntary contributory pension scheme for unorganised workers launched in February 2019. Workers aged 18 to 40 earning up to Rs 15,000 a month contribute Rs 55 to Rs 200 monthly, matched equally by the government, to earn an assured Rs 3,000 monthly pension after age 60. It matters for UPSC as the flagship old-age security scheme for India's informal workforce in GS-2 and GS-3.

Example: Over 54 lakh beneficiaries enrolled as of July 2026

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PM2.5

Fine particulate matter with a diameter of 2.5 micrometres or less, produced by combustion (vehicles, industry, crop burning) and by secondary formation in the atmosphere. Because it penetrates deep into the lungs and enters the bloodstream, it is the most health-damaging air pollutant, linked to respiratory and cardiovascular disease, and India's National Ambient Air Quality Standards set its annual limit at 40 micrograms per cubic metre. It is the headline indicator in India's air quality indices.

Example: During Delhi's winter smog episodes, PM2.5 levels routinely exceed safe limits several times over, triggering Graded Response Action Plan restrictions.

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PMAY

PMAY is the acronym for the Pradhan Mantri Awas Yojana, the Centre's Housing for All programme launched in 2015. It provides central assistance to eligible urban households (PMAY-Urban) and rural households (PMAY-Gramin) for building or buying a pucca house, converging with toilet, LPG, electricity and water connections. The acronym is the standard shorthand used in policy documents and prelims questions.

Example: A question asking about the government's flagship rural housing scheme expects the answer PMAY-Gramin.

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PMEGP

PMEGP (Prime Minister's Employment Generation Programme) is a credit-linked subsidy scheme for setting up micro-enterprises, implemented by the Khadi and Village Industries Commission since 2008-09. Banks fund the project cost while the government gives a margin-money subsidy of 15 to 35 per cent, higher for SC, ST, women and hill-area beneficiaries. It matters for UPSC as the standard self-employment and MSME-promotion scheme in GS-3.

Example: Formed in 2008-09 by merging the PMRY and REGP schemes

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PMFBY

PMFBY (Pradhan Mantri Fasal Bima Yojana) is the national crop-insurance scheme launched in kharif 2016, replacing earlier insurance programmes with a single low-premium design. Farmers pay only 2 per cent of the sum insured for kharif crops, 1.5 per cent for rabi and 5 per cent for horticulture, with the Centre and states sharing the balance of the actuarial premium paid to insurers. For UPSC it is the core example of risk management in agriculture, frequently examined for its claim-settlement delays and the 2020 revamp that made enrolment voluntary.

Example: A soybean farmer in Maharashtra whose crop is wiped out by excess rain can claim compensation assessed through satellite and field data under PMFBY.

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PMFME

PMFME (PM Formalisation of Micro Food Processing Enterprises) is the June 2020 central scheme that brings unorganised food-processing units into the formal fold. With a Rs 10,000 crore outlay under Atmanirbhar Bharat, it gives credit-linked subsidy to two lakh units, following a One District One Product approach with common infrastructure and branding support. It matters for UPSC as the MSME-formalisation and rural-industrialisation case study in GS-3.

Example: Launched in June 2020 under Atmanirbhar Bharat with a One District One Product approach

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PMFME scheme

The PMFME scheme (Pradhan Mantri Formalisation of Micro Food Processing Enterprises) is the 2020 programme upgrading two lakh micro food-processing units through credit-linked subsidy, training and branding. Implemented under Atmanirbhar Bharat, it formalises the vast unorganised processing sector via the One District One Product approach. For UPSC it is the micro-enterprise pillar of food processing.

Example: A jaggery unit in Kolhapur upgraded and branded under ODOP with PMFME support shows the scheme's model.

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PMGDISHA

PMGDISHA (Pradhan Mantri Gramin Digital Saksharta Abhiyan) is the rural digital-literacy scheme that trained crores of rural adults to operate digital devices and access e-services. It underpins farmers' ability to use apps, DBT and online scheme portals. For UPSC it is the literacy foundation of digital agriculture.

Example: A newly trained villager checking her PM-KISAN payment status on a phone shows PMGDISHA's outcome.

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PMGKAY

PMGKAY is the acronym for the Pradhan Mantri Garib Kalyan Anna Yojana, the free-foodgrain programme merged with the National Food Security Act from January 2024. About 81.35 crore NFSA beneficiaries receive 5 kg of foodgrains per person per month free of cost, with the scheme extended to December 2028. It matters for UPSC whenever questions ask about food security, subsidy burden or direct benefit transfer in GS-2 and GS-3.

Example: About 81.35 crore NFSA beneficiaries receive free foodgrains every month

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PMGSY is

PMGSY (Pradhan Mantri Gram Sadak Yojana) is the rural roads programme that builds all-weather roads to unconnected habitations. Launched on 25 December 2000, it is fully centrally sponsored and has constructed lakhs of kilometres of rural roads, with PMGSY-IV approved in 2024 for the remaining unconnected habitations. It matters for UPSC as the flagship rural-connectivity and infrastructure scheme in GS-3.

Example: Launched on 25 December 2000

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PMGSY, launched in 2000

PMGSY, launched in 2000, is India's flagship rural road scheme connecting habitations with all-weather roads. Its successive phases upgraded existing roads and added green technologies, and PMGSY-IV, approved in September 2024, targets 25,000 still-unconnected habitations. It matters for UPSC as the long-running case study of rural infrastructure and last-mile connectivity.

Example: PMGSY-IV approved in September 2024 for 25,000 unconnected habitations

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PMJDY

PMJDY (Pradhan Mantri Jan Dhan Yojana) is the National Mission for Financial Inclusion launched on 28 August 2014. It opened zero-balance bank accounts for every unbanked household, bundled with a RuPay debit card carrying Rs 2 lakh accident insurance, overdraft up to Rs 10,000 and direct benefit transfer of subsidies. It matters for UPSC as the foundation of JAM trinity answers on inclusion and leakage-free delivery in GS-2 and GS-3.

Example: Launched on 28 August 2014

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PMJJBY

The Pradhan Mantri Jeevan Jyoti Bima Yojana (PMJJBY) is a government-backed life-insurance scheme offering Rs 2 lakh cover on death for an annual premium of Rs 436. Open to bank account holders aged 18 to 50 with auto-debit consent, it brings cheap term insurance to low-income households. It is the life-cover pillar of the Jan Dhan, Aadhaar and Mobile financial-inclusion architecture.

Example: A daily-wage worker's family receives Rs 2 lakh if the insured member dies during the policy year.

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PMJJBY (Jeevan Jyoti Bima Yojana)

PMJJBY (Pradhan Mantri Jeevan Jyoti Bima Yojana) is a government-backed life insurance scheme launched on 9 May 2015. Anyone aged 18 to 50 with a bank account gets Rs 2 lakh of life cover for death due to any reason at a premium of Rs 436 a year, auto-debited and renewable annually. It matters for UPSC as the low-cost social-security pillar alongside PMJDY and PMSBY in GS-2.

Example: Launched on 9 May 2015 in Kolkata

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PMJVK

The Pradhan Mantri Jan Vikas Karyakram (PMJVK), run by the Ministry of Minority Affairs since its 2018 restructuring of the earlier Multi-sectoral Development Programme, builds infrastructure in minority-concentration areas. It funds schools, health centres, skill centres and drinking-water projects in identified blocks and towns to close development gaps between minority-concentration areas and the national average. It is the area-development arm of minority welfare.

Example: A girls' hostel or a primary health centre built in a minority-concentration block may be funded under PMJVK.

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PMKSY

Pradhan Mantri Krishi Sinchayee Yojana, launched in 2015, is the umbrella irrigation scheme with the motto Har Khet Ko Pani (water to every field). It converges the Accelerated Irrigation Benefits Programme, the Integrated Watershed Management Programme and on-farm water management, focusing on expanding assured irrigation, improving water-use efficiency and watershed development. The Per Drop More Crop micro-irrigation component is part of it.

Example: PMKSY's watershed projects in drought-prone districts combine check dams, farm ponds and drip irrigation to raise water availability per hectare.

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PMKSY is also the acronym for PM Kisan Sampada Yojana

PMKSY is a shared acronym: it stands for PM Kisan Sampada Yojana, the food-processing umbrella scheme under the Ministry of Food Processing Industries, and also for Pradhan Mantri Krishi Sinchai Yojana, the 2015 irrigation mission built on Har Khet Ko Pani. Since the two schemes belong to different ministries and sectors, this disambiguation matters for UPSC prelims, where confusing the two costs marks.

Example: Pradhan Mantri Krishi Sinchai Yojana, the irrigation mission launched in 2015, shares the same acronym

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PMKSY-Irrigation

PMKSY-Irrigation refers to the Accelerated Irrigation Benefit Programme and Har Khet Ko Pani components of PMKSY that complete long-pending major and medium irrigation projects. It prioritises 99 long-delayed projects for fast-tracked central assistance to create new irrigation potential. For UPSC it is the supply-side pillar of the irrigation mission.

Example: The fast-tracked completion of the Polavaram project's irrigation component rides on this funding window.

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PMKSY-Per Drop More Crop

The micro-irrigation component of PMKSY, administered by the Department of Agriculture and Farmers Welfare, which subsidises drip and sprinkler systems for farmers. It promotes water-use efficiency in agriculture by delivering water directly to plant roots, with higher subsidy rates for small and marginal farmers. It is central to the goal of getting more crop per drop of water.

Example: Sugarcane farmers in Maharashtra have adopted drip irrigation under Per Drop More Crop, cutting water use per quintal of cane significantly.

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PMKSY-SAMPADA

PMKSY-SAMPADA is the acronym trap the article flags: PMKSY stands for both the Pradhan Mantri Krishi Sinchayee (irrigation) Yojana and the Pradhan Mantri Kisan SAMPADA (food processing) Yojana. The collision is a favourite examiner device to test whether candidates confuse the irrigation mission with the food-processing scheme. For UPSC, keeping the two PMKSYs distinct is essential exam hygiene.

Example: A question asking which ministry runs PMKSY expects the candidate to know there are two different answers.

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PMKVY

Pradhan Mantri Kaushal Vikas Yojana (PMKVY) is the flagship skill-development scheme of the Ministry of Skill Development and Entrepreneurship, launched in 2015. It provides free, short-term, NSQF-aligned vocational training with certification, and its later phases added recognition of prior learning and on-the-job training. For UPSC it matters as the main instrument for converting India's demographic dividend into employable skills, frequently evaluated against placement and training-quality outcomes.

Example: PMKVY 4.0, announced in the 2023-24 Union Budget, introduced courses in artificial intelligence, robotics, drones and coding to align skilling with emerging sectors.

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PMKVY 4.0

The fourth phase of the Pradhan Mantri Kaushal Vikas Yojana, the flagship short-term skill training scheme under the Skill India Mission, announced in the Union Budget 2023-24 and running from FY 2023-24 to 2025-26. It emphasises new-age skills such as artificial intelligence, robotics, mechatronics, IoT and drones, delivered through short-term training and recognition of prior learning, with the National Skill Development Corporation as the implementing agency. The scheme aims to align skilling with Industry 4.0 demand.

Example: Training centres under PMKVY 4.0 offer courses for robotics technicians and drone operators aligned with emerging industry demand.

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PMKVY is

PMKVY (Pradhan Mantri Kaushal Vikas Yojana) is the flagship skill-training scheme of the Ministry of Skill Development and Entrepreneurship, launched in 2015. It offers free short-term training with certification and placement assistance, later adding recognition of prior learning for experienced workers, with PMKVY 4.0 announced in Budget 2023-24. It matters for UPSC as the core skilling and demographic-dividend scheme in GS-3.

Example: PMKVY 4.0 announced in the Union Budget 2023-24

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PMMVY

PMMVY (Pradhan Mantri Matru Vandana Yojana) is a maternity benefit scheme launched in 2017 that pays Rs 5,000 in three instalments to pregnant and lactating women for their first living child. It partly compensates wage loss and promotes institutional delivery and immunisation, and now runs under the Mission Shakti umbrella. It matters for UPSC as the flagship maternal-health and women-welfare scheme in GS-1 and GS-2.

Example: Launched in January 2017

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PMSBY

The Pradhan Mantri Suraksha Bima Yojana (PMSBY) is a government-backed accident-insurance scheme giving Rs 2 lakh cover for accidental death or full disability at a premium of just Rs 20 a year. Open to bank account holders aged 18 to 70 with auto-debit consent, it extends accident protection to low-income households. Paired with PMJJBY, it completes the basic social-security cover for the poor.

Example: A construction worker disabled in a site accident can claim Rs 2 lakh under PMSBY.

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PMSBY (Suraksha Bima Yojana)

PMSBY (Pradhan Mantri Suraksha Bima Yojana) is a government-backed accident insurance scheme launched on 9 May 2015. Anyone aged 18 to 70 with a bank account gets Rs 2 lakh cover for accidental death or total disability (Rs 1 lakh for partial disability) at a premium of just Rs 20 a year. It matters for UPSC as the cheapest social-security instrument for the unorganised workforce in GS-2.

Example: Over 58 crore people enrolled, as cited in the June 2026 Mann Ki Baat address

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PMSMA

The Pradhan Mantri Surakshit Matritva Abhiyan (PMSMA), launched in 2016, guarantees free antenatal check-ups to pregnant women on the 9th of every month, with private doctors encouraged to volunteer at public facilities. By detecting high-risk pregnancies early, it targets India's maternal and infant mortality. It complements the Janani Suraksha Yojana's push for institutional delivery.

Example: A pregnant woman visiting her PHC on the 9th of the month for a free specialist check-up is using PMSMA.

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PNDT Act, 1994

The Pre-Conception and Pre-Natal Diagnostic Techniques Act, 1994, amended in 2003 as the PCPNDT Act, regulates ultrasound clinics and genetic counselling centres to stop sex-selective abortion. It bans the advertisement and use of diagnostic techniques for determining foetal sex, with mandatory registration, record-keeping and punishment provisions. It is the legal backbone of the fight against female foeticide in India.

Example: A diagnostic centre must display a statutory notice that sex determination is a punishable offence under this Act.

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Pneumatophores

Pneumatophores are specialised breathing roots that grow upward out of waterlogged, oxygen-poor mud in mangrove forests. They absorb oxygen from the air through small pores called lenticels and channel it down to the submerged root system.

Example: The pencil-like spikes rising from the mud around Sundari trees in the Sundarbans are pneumatophores keeping the trees alive in anoxic soil.

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Pochampally

Pochampally is a town in Telangana famous for Pochampally ikat, a handwoven double-ikat fabric with geometric patterns that holds a Geographical Indication tag. It is also where Vinoba Bhave launched the Bhoodan (land-gift) movement in 1951, urging landowners to donate land to the landless. For UPSC it matters in art and culture (crafts, GI tags) and modern history (Bhoodan).

Example: Vinoba Bhave launched the Bhoodan movement at Pochampally in 1951.

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pocket veto

The pocket veto is the President's power to kill a bill through inaction: under Article 111 the President may assent, withhold assent, or return the bill, but no time limit is prescribed, so a bill can simply be left pending indefinitely. It applies to ordinary bills, not money bills. Because it is exercised silently, it is the strongest of the President's vetoes. Example: President Zail Singh pocket-vetoed the Indian Post Office (Amendment) Bill of 1986 by never acting on it.

Example: President Zail Singh's pocket veto of the Indian Post Office (Amendment) Bill, 1986, which lapsed without presidential action.

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POCSO

The Protection of Children from Sexual Offences Act, 2012 is a gender-neutral law that defines sexual offences against children below 18 years and prescribes graded punishments. It mandates child-friendly trial procedures, special courts for speedy disposal, and compulsory reporting of offences. The 2019 amendment raised penalties, including the death penalty for aggravated penetrative assault on young children. For UPSC it links child rights, criminal law reform, and judicial sensitivity.

Example: Special POCSO courts designated in each district for time-bound trials.

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POCSO Act (2012)

The POCSO Act (2012), the Protection of Children from Sexual Offences Act, is India's dedicated law against child sexual abuse, with child-friendly procedures, special courts and stringent punishment. It anchors essays on child safety alongside the digital-age extensions of online abuse. It is the legal core of the child-protection frame.

Example: The 2012 POCSO Act as India's dedicated law against child sexual offences.

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POCSO Act, 2012

The POCSO Act, 2012 (Protection of Children from Sexual Offences) is the special law safeguarding children below 18 from sexual abuse, assault and pornography. It mandates child-friendly reporting and trial procedures, special courts and time-bound disposal, and its 2019 amendment introduced the death penalty for aggravated penetrative sexual assault. It matters for UPSC across GS-1, GS-2 and GS-4 on child rights and criminal justice.

Example: The 2019 amendment added the death penalty for aggravated penetrative sexual assault of a child

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Point of Sale (PoS) device

A Point of Sale device in the fertiliser system is the Aadhaar-authenticated terminal at retail shops that records every subsidised sale to a verified farmer. Linked to the Integrated Fertilizer Monitoring System, it ensures subsidy is claimed only on genuine farm sales. For UPSC it is the technology choke-point that curbed fertiliser diversion.

Example: The PoS beep confirming a farmer's identity before urea is sold shows the device's gatekeeping role.

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point source

A point source of pollution is a discharge that comes from a single, identifiable location, such as a factory outlet pipe, a sewage treatment plant or a power station chimney. Because the source is discrete, its pollutant load can be measured, permitted and regulated directly. This contrasts with non-point sources like farm run-off, which are diffuse and much harder to control.

Example: An industrial effluent pipe discharging into a river, regulated in India through consent orders under the Water (Prevention and Control of Pollution) Act, 1974.

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pointing at a map

'Pointing at a map' is shorthand for the map-work skill at the heart of UPSC Prelims geography: locating straits, passes, rivers, deserts, ports and places in the news on an atlas rather than memorising text. Questions routinely ask which strait a ship crossed or which countries border a lake, testing spatial recall. For UPSC GS-1, it is the difference between reading geography and knowing it.

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Pokhran II

Pokhran II is the series of five underground nuclear tests India conducted at Pokhran, Rajasthan, on 11 and 13 May 1998 under the code name Operation Shakti. The tests declared India a nuclear-weapon state and led to international sanctions, especially from the United States and Japan. For UPSC it is central to India's nuclear doctrine debates, the road to the 2008 NSG waiver and the civil nuclear deal, and to the principle of credible minimum deterrence.

Example: The 11 May 1998 tests included a thermonuclear device, and the US imposed Glenn Amendment sanctions on India within days.

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Pokhran-II

Pokhran-II is India's second round of nuclear testing, conducted at the Pokhran range in Rajasthan on 11 and 13 May 1998. Five devices were detonated, including fission, thermonuclear and sub-kiloton designs, after which Prime Minister Vajpayee announced India as a nuclear weapon state. For UPSC it marks the moment India's declared nuclear status reshaped South Asian security, triggering Pakistan's Chagai tests and a global non-proliferation debate.

Example: Pakistan responded within weeks with its own Chagai tests of May 1998, cementing overt nuclearisation of the subcontinent.

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Pokhran-II / Operation Shakti (May 1998)

Pokhran-II, codenamed Operation Shakti, was the series of five underground nuclear tests India conducted at Pokhran, Rajasthan, on 11 and 13 May 1998, led scientifically by A. P. J. Abdul Kalam and R. Chidambaram. The tests declared India a nuclear-weapon state and drew international sanctions. For UPSC they matter in defence, foreign policy, and the evolution of India's nuclear doctrine.

Example: Pakistan responded with its Chagai-I tests on 28 May 1998.

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Pokhran-II nuclear tests of 1998

Pokhran-II was the series of five underground nuclear device tests India conducted at Pokhran, Rajasthan, on 11 and 13 May 1998, including a thermonuclear (hydrogen bomb) device. The tests, codenamed Operation Shakti, declared India a nuclear-weapons state, drew international sanctions, and were followed by India's declared no-first-use doctrine.

Example: The 11 May tests included the Shakti-I thermonuclear device, the Shakti-II fission device and a sub-kiloton device, with two more sub-kiloton tests on 13 May.

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Pokhran, Rajasthan

Pokhran is a town in Rajasthan's Jaisalmer district that hosts the Indian Army's Pokhran Test Range in the Thar desert. India conducted its first peaceful nuclear explosion, Smiling Buddha, there in 1974 and five further tests under Operation Shakti in 1998. For UPSC it matters in science and technology, defence, and India's nuclear doctrine of credible minimum deterrence.

Example: Pokhran-II nuclear tests, 11 and 13 May 1998.

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polaj

Polaj is the Mughal land-revenue classification for land under continuous annual cultivation, recorded in the Ain-i-Akbari. Because it never lay fallow, polaj was assessed at the highest revenue rate, above parauti, chachar and banjar, the progressively longer-fallow categories. The system let Akbar's administration grade land by productivity and fix cash demands accordingly. For UPSC GS-1 medieval history, it is core to the zabt revenue system. Example: the Ain-i-Akbari's fourfold land classification under Akbar.

Example: the Ain-i-Akbari's fourfold land classification under Akbar

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polar cell

The polar cell is the smallest and coldest of the three atmospheric circulation cells, operating between about 60 degrees latitude and the poles in each hemisphere. Cold dense air sinks over the poles, flows equatorward at the surface, rises at the subpolar low and returns poleward aloft, driving the polar easterlies. For UPSC GS-1 physical geography, it completes the tri-cellular model with the Hadley and Ferrel cells.

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Polarised public discourse

Polarised public discourse is public debate split into hostile, mutually distrustful camps where issues are framed in absolute terms and compromise is treated as betrayal. It weakens deliberative democracy, amplifies misinformation, and strains social cohesion. For UPSC it matters in GS-4 ethics (tolerance, emotional intelligence) and GS-2 governance, where answers can cite media regulation, digital literacy, and institutional dialogue as remedies.

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Polavaram project

The Polavaram project is the multipurpose dam on the Godavari in Andhra Pradesh, declared a national project in 2014 with central funding of the irrigation component. It promises irrigation to over 7 lakh acres, drinking water to Visakhapatnam and hydropower, but faces resettlement controversies and submergence concerns. For UPSC it is the leading example of a declared national irrigation project.

Example: Its left and right bank canals are designed to carry Godavari water into the Krishna delta's command areas.

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Police Act

A Police Act is the statute governing the organisation, powers, and accountability of the police in a state. Much of India still functions under the colonial Indian Police Act of 1861, though the Supreme Court's Prakash Singh directives of 2006 pushed states toward reform on tenure, transfers, and complaints authorities. Police is a State subject under the Seventh Schedule. For UPSC it anchors police reform debates.

Example: State police acts modelled on the 2006 Model Police Act.

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Police Act Drafting Committee

The Police Act Drafting Committee was set up by the Ministry of Home Affairs in 2005 under former Attorney General Soli Sorabjee to draft a new model Police Act replacing the 1861 law. It submitted a draft Model Police Act in 2006 emphasising functional autonomy, accountability, and community policing. For UPSC it is the key reference in police reform questions.

Example: Its recommendation of fixed minimum tenures for Directors General of Police.

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police action of 13–18 September 1948, codenamed Operation Polo

The police action of 13-18 September 1948, codenamed Operation Polo, is the Indian armed forces' five-day operation that ended the Nizam's rule and integrated Hyderabad into the Union. Launched after the Standstill Agreement broke down and Razakar violence escalated, it was commanded by Major General J.N. Chaudhuri, and the Nizam surrendered on 18 September. For UPSC GS-1 post-independence history, it is the case of princely-state integration by force. Example: Hyderabad's accession following the Nizam's surrender on 18 September 1948.

Example: Hyderabad's accession following the Nizam's surrender on 18 September 1948

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Police Complaints Authority

A Police Complaints Authority is a body at the state and district levels recommended by the Supreme Court in Prakash Singh v. Union of India (2006) to inquire into public complaints of serious misconduct by police personnel. It was meant to break the culture of impunity and give citizens an external redressal forum. For UPSC it represents judicially driven police accountability.

Example: A district authority probing a custodial violence complaint.

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Police Establishment Board

The Police Establishment Board is a departmental body mandated by the Supreme Court's Prakash Singh directives of 2006 to decide transfers, postings, promotions, and grievances of police officers up to the rank of Deputy Superintendent of Police. It insulates personnel decisions from political interference. For UPSC it illustrates institutional safeguards for police autonomy.

Example: The Board approving district-level postings on merit rather than patronage.

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policy asymmetry

Policy asymmetry is the uneven regulatory burden across sectors of an economy, where one sector faces far lighter licensing, labour and land constraints than another. In India services enjoyed almost none of the controls that shackled manufacturing, so capital and talent flowed where resistance was lowest, producing services-led growth. For UPSC GS-3 economy, it explains why India skipped the classic manufacturing transition. Example: the post-1991 boom in software and back-office services.

Example: the post-1991 boom in software and back-office services

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Policy continuity

Policy continuity is the sustained direction of government policy across changes of regime or leadership, so that long-term programmes survive electoral transitions. It builds investor confidence, allows reforms to mature, and is prized in areas like infrastructure, foreign policy, and economic liberalisation. For UPSC it matters in GS-2 governance and GS-3 economy, often contrasted with policy reversals driven by electoral cycles.

Example: Economic liberalisation begun in 1991 continued across successive Indian governments.

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Policy deadlocks

Policy deadlocks are situations in which competing interests, divided institutions, or rigid procedures prevent decisions from being taken, leaving problems unaddressed. They arise from coalition politics, centre-state disputes, or judicial and legislative stand-offs. For UPSC they matter in GS-2 governance: answers can link deadlocks to delayed reforms and cite cooperative federalism, consensus-building, and administrative reform as escapes.

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policy distortion

Policy distortion refers to government policies, especially subsidies and price controls, that warp the incentives of producers or consumers and cause resource misuse. When a resource is priced far below its real cost, users overconsume it, often damaging the environment in the process. Correcting such distortions is a recurring prescription in water, energy and agriculture policy.

Example: Free or heavily subsidised electricity for farm pumps in several Indian states, which encourages round-the-clock groundwater pumping and steadily falling water tables.

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Policy Expert Committee

A Policy Expert Committee is an ad hoc body of domain specialists constituted by a government to study an issue and recommend policy action. Such committees lend technical depth and credibility to reforms, and their reports often become the basis of legislation. For UPSC, committee recommendations are a staple of mains answers on governance and reform.

Example: The Bibek Debroy committee on restructuring the Railways.

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policy formulation

Policy formulation is the process of designing the laws, plans and guidelines that govern disaster management, such as national policies, state disaster management plans and building codes. It translates risk knowledge into authoritative rules and budgets.

Example: the National Policy on Disaster Management (2009) was India's first comprehensive policy formulation for the sector

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Policy link

A policy link is the explicit connection between an ecological concept and government action, where scientific understanding is translated into a programme, scheme or regulation. Ecological theory thus becomes the working logic of policy design and a test of whether an intervention is sound.

Example: Restoration projects such as the Aravalli Green Wall and mined-land reclamation are assisted secondary succession, so choosing species that fit the ecological sere determines whether the policy succeeds; planting the wrong species stalls recovery.

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Policy-induced

A policy-induced outcome is one caused by government policy choices rather than by natural forces or market dynamics alone, for example inflation driven by administered prices or migration triggered by land acquisition. The adjective is useful in UPSC answers to attribute responsibility and evaluate state action. It matters in GS-3 economy and GS-2 governance, where distinguishing policy-induced effects from structural ones sharpens analysis.

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Poligar wars

The Poligar wars are the late 18th and early 19th century revolts of Tamil Nadu's Palaiyakkarar (Poligar) chieftains against the East India Company's revenue demands and disarmament. The first war (1799) centred on Veerapandiya Kattabomman of Panchalankurichi; the second (1800-01) on the Maruthu brothers of Sivaganga. For UPSC they are classic early resistance movements illustrating how revenue policy drove anti-colonial rebellion.

Example: Kattabomman's hanging at Kayathar on 16 October 1799 is commemorated as one of the earliest martyrdoms of the freedom struggle in the south.

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Poligars

Poligars (Palaiyakkarars) were local warrior-chieftains in Tamil Nadu who held military and revenue rights, first under the Nayaks of Madurai and later under the Nawab of Arcot. They resisted British revenue demands in the Poligar rebellions of 1799 and 1801. For UPSC they matter in modern history as early anti-colonial resistance, exemplifying the clash between indigenous military tenures and Company revenue systems.

Example: Veerapandya Kattabomman, the Poligar chief hanged by the British in 1799.

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Polio

Polio is a highly infectious viral disease, spread mainly through contaminated water, that can cause irreversible paralysis in children and is preventable by the oral polio vaccine. India's Pulse Polio programme (from 1995) and intensive surveillance eliminated it: the last wild case was reported in 2011 and WHO certified India polio-free in 2014. For UPSC it matters in GS-2 health, immunisation drives, and disease-surveillance systems.

Example: India's last wild polio case was reported in January 2011 in Howrah, West Bengal.

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polio-free certification

Polio-free certification is the World Health Organization's formal declaration that wild poliovirus transmission has been interrupted in a country or region, after years of surveillance with no cases. India's last wild polio case was reported in January 2011 in Howrah, West Bengal, and the South-East Asia region, including India, was certified polio-free in March 2014. For UPSC it is a flagship public-health success story.

Example: The Pulse Polio programme's booth-based immunisation drives achieved near-universal coverage of under-five children.

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Political

In UPSC usage, 'political' means relating to the exercise of power, governance, and public affairs, whether in constitutional design, electoral competition, or international relations. It appears in phrases like political theory, political geography, and political economy that frame how states are organised and how decisions are made. It matters for UPSC because much of GS-2 and the polity syllabus is the structured study of political institutions and processes.

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Political — power struggle

A power struggle is a contest between individuals, groups, or institutions for control over authority, offices, and resources within a political system. It surfaces in succession disputes, coalition instability, party factionalism, and centre-state tussles. For UPSC it is a useful analytical lens in GS-2 polity (federalism, party systems) and in modern history, for instance in the factional Mughal court after Aurangzeb.

Example: The Sayyid brothers acted as king-makers in the Mughal court in the 1710s.

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Political accountability

Political accountability is the obligation of elected leaders and governments to answer for their actions and face consequences for failures. Its instruments include elections, parliamentary questions and debates, audit institutions like the CAG, judicial review, the media, and the RTI Act. For UPSC it matters in GS-2 governance and GS-4 ethics, where it underpins probity, transparency, and the legitimacy of democratic rule.

Example: Question Hour in Parliament and CAG audit reports are instruments of political accountability.

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political anti-model

A political anti-model is a regime or arrangement invoked as the negative example of what a polity must avoid, the mirror image of the order being built. In the Indian context the Government of India Act 1935 serves as one: independent India kept its administrative machinery but discarded its instruments of colonial control. For UPSC GS-2 polity, it sharpens answers on constitutional continuity and rupture. Example: the 1935 Act's safeguards and dyarchy, rejected by the Republic.

Example: the 1935 Act's safeguards and dyarchy, rejected by the Republic

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Political causes

In UPSC answers, political causes are the governance and power-related drivers behind a phenomenon, such as riots, separatism, corruption, or policy failure. They include weak institutions, exclusionary politics, electoral incentives, and elite capture. Identifying political causes matters in GS-2 and GS-4 answers because it separates what the state can fix through reform from deeper social or economic roots.

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political education

Political education is the process by which citizens learn about democratic institutions, rights, duties and the electoral process, enabling informed participation. In India it is carried out through school civics, media and the Election Commission's outreach. For UPSC it links to voter awareness, democratic deepening and the quality of electoral participation.

Example: The Election Commission's SVEEP programme (Systematic Voters' Education and Electoral Participation) runs campaigns to raise turnout and informed voting.

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Political grievances

Political grievances are perceived injustices in representation, autonomy and democratic process that fuel separatism, from the rigged 1987 J&K elections to unfulfilled accords. They matter because insurgencies almost always begin as political disputes before turning violent.

Example: The widely criticised 1987 Jammu and Kashmir assembly elections

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Political interference

Political interference is the undue involvement of elected leaders in administration, policing, transfers, postings, and investigations, bending neutral institutions to partisan ends. It erodes bureaucratic morale, the rule of law, and public trust. For UPSC it matters in GS-2 governance (police and civil-services reform) and GS-4 ethics (political neutrality, integrity of public servants).

Example: The Supreme Court's Prakash Singh directives (2006) sought fixed tenures for police officers to curb political interference.

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Political leadership

Political leadership is the capacity of leaders to set a direction for the polity, mobilise people and institutions, manage crises, and take responsibility for outcomes. It combines vision, communication, and ethical example with institution-building. For UPSC it matters in GS-2 and GS-4: leadership quality explains the success or failure of movements, reforms, and governance, and is a favourite theme in ethics case studies.

Example: Mahatma Gandhi's leadership of the Non-Cooperation Movement (1920-22).

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Political mobilisation

Political mobilisation is the process of activating citizens, groups, or communities for collective political action, through parties, movements, campaigns, or social media. It converts grievances into organised pressure on the state. For UPSC it matters in GS-2 (pressure groups, electoral politics) and modern history, where mass mobilisation distinguished Gandhian movements from earlier elite petitioning.

Example: The 1919 Rowlatt satyagraha mobilised all-India protest against British repression.

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political stability

Political stability is the condition in which a government can complete its term, transfer power by constitutional means, and pursue policy without violent disruption or chronic institutional crisis. It rests on legitimate institutions, predictable succession and broad acceptance of the rules of the game. For UPSC GS-2 governance, it underpins discussions of coalition politics, federal friction and development outcomes.

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political teachers" of modern India

The 'political teachers' of modern India is historian Bipin Chandra's phrase for the Moderates, the early Congress nationalists of 1885-1905. Through petitions, the press and economic critique, especially the drain-of-wealth theory, they trained Indians in constitutional methods and nationalist thought. For UPSC GS-1 modern history, they are the foundation layer on which Extremists and Gandhi later built. Example: Dadabhai Naoroji's Poverty and Un-British Rule in India, 1901.

Example: Dadabhai Naoroji's Poverty and Un-British Rule in India, 1901

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Political theory

Political theory is the systematic study of ideas about the state, power, justice, rights, and the good life, from thinkers such as Plato, Aristotle, Machiavelli, Locke, Marx, and Gandhi. It supplies the concepts, liberty, equality, sovereignty, that organise political argument. For UPSC it is the foundation of the PSIR optional and enriches GS-2 and GS-4 answers with conceptual precision.

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Politically

In UPSC usage, 'politically' frames an issue through power, governance and statecraft: how policies are contested, how institutions distribute authority, and how political incentives shape outcomes. It signals analysis at the level of legislatures, parties, centre-state relations and electoral consequences rather than purely economic or technical ones. For UPSC, marking the political dimension is often the difference between a one-sided answer and a balanced mains response.

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Politically exposed persons

The Benami Transactions (Prohibition) Amendment Act, 2016 overhauled the 1988 Benami Act, defining benami property, empowering authorities to confiscate it and prescribing jail terms. It matters because benami holdings are a classic laundering layer for corruption and crime proceeds.

Example: Confiscation of benami flats held in servants' names

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politically neutral

Politically neutral is the expectation that state institutions and public servants act without partisan bias, serving the government of the day while owing loyalty to the Constitution, not to a party. It covers the civil services, the judiciary, the Election Commission and the armed forces. For UPSC GS-2 and GS-4, it anchors questions on civil service neutrality, ethics and institutional integrity.

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politicised caste

Politicised caste is caste functioning as the organised axis of electoral competition and state power rather than only a social hierarchy. Rajni Kothari argued that in modern India caste was not abolished by politics but politicised by it, with parties mobilising caste blocs for votes and reservations. For UPSC GS-1 society and GS-2 polity, it is central to Mandal politics and social justice debates. Example: the 1990 implementation of Mandal Commission reservations for OBCs.

Example: the 1990 implementation of Mandal Commission reservations for OBCs

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politics of recognition

The politics of recognition is the struggle by groups to win official acknowledgement of their identity, language or heritage from the state, a concept associated with Charles Taylor's 1992 essay. Recognition confers status, resources and symbolic equality, so each grant energises the next claimants. For UPSC GS-1 society, it explains language-status agitations and identity movements. Example: the 2024 grant of classical-language status to Marathi, Bengali, Assamese, Pali and Prakrit.

Example: the 2024 grant of classical-language status to Marathi, Bengali, Assamese, Pali and Prakrit

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poljes

Poljes are large, flat-floored depressions in karst limestone country, bigger than sinkholes and bounded by steep walls. They form where limestone dissolves along fractures or where cave roofs collapse, and their floors often hold fertile soil and seasonal lakes. For UPSC GS-1 physical geography, they are the classic large-scale karst landform alongside caves and sinkholes. Example: the poljes of the Dinaric Alps in the Balkans, the type region of karst.

Example: the poljes of the Dinaric Alps in the Balkans, the type region of karst

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Polluter pays

The polluter pays principle is the environmental rule that whoever causes pollution must bear the cost of remedying it, including compensating victims and restoring degraded ecology. It originated in OECD policy (1972) and Rio Principle 16, and the Supreme Court made it part of Indian law in Vellore Citizens' Welfare Forum v. Union of India (1996). For UPSC it matters in GS-3 environment and in environmental jurisprudence.

Example: Vellore Citizens' Welfare Forum v. Union of India (1996).

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polluter-pays

The polluter-pays principle holds that whoever causes pollution should bear the cost of preventing, controlling and cleaning it up. It is a cornerstone of environmental law, recognised in the Rio Declaration of 1992 and applied by the Supreme Court of India in several judgments. In the space-debris debate it is invoked as the idea that satellite operators and launching states should pay for the orbital mess they create.

Example: In Alembic Pharmaceuticals v. Rohit Prajapati (2020), the Supreme Court ordered the offending industries to pay Rs 10 crore each to the Gujarat Pollution Control Board for environmental restoration.

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polluter-pays principle

The polluter-pays principle is the environmental law rule that the party responsible for pollution must bear the cost of preventing, controlling and cleaning it up, rather than passing the burden to society. It internalises environmental costs into prices and deters harmful activity. For UPSC GS-3 environment, it is a staple of EIA, liability and sustainable development answers. Example: the Supreme Court's recognition of the principle in Indian Council for Enviro-Legal Action v. Union of India, 1996.

Example: the Supreme Court's recognition of the principle in Indian Council for Enviro-Legal Action v. Union of India, 1996

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Pollution

Pollution is the introduction of harmful substances or energy, such as chemicals, particulates, noise or heat, into the environment at levels that damage ecosystems and human health. Major forms include air, water, soil, noise and light pollution, regulated in India under laws like the Water Act of 1974 and the Air Act of 1981.

Example: Untreated sewage discharged into a river depletes its dissolved oxygen and kills aquatic life, a classic case of water pollution affecting wetlands.

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polyandry

Polyandry is the marriage form in which one woman has two or more husbands at the same time, most commonly fraternal polyandry among brothers. It is usually explained as a strategy to keep land undivided and limit population pressure in resource-scarce regions. For UPSC GS-1 society, it is the rarest of the standard marriage forms alongside monogamy, polygyny and polygamy. Example: fraternal polyandry among the Jaunsari people of Jaunsar-Bawar, Uttarakhand, and in Kinnaur, Himachal Pradesh.

Example: fraternal polyandry among the Jaunsari people of Jaunsar-Bawar, Uttarakhand, and in Kinnaur, Himachal Pradesh

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polygamy

Polygamy is the marriage form in which a person has more than one spouse at the same time, covering both polygyny (one husband, several wives) and polyandry (one wife, several husbands). It is regulated or prohibited by most modern legal systems and persists mainly under customary or religious personal laws. For UPSC GS-1 society, it is examined through gender, law and social reform lenses.

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polygyny

Polygyny is the marriage form in which one man has two or more wives at the same time, the most widespread historical form of polygamy. It was common among ruling elites and is still permitted under some religious personal laws with conditions. For UPSC GS-1 society and GS-2 polity, it features in debates on a uniform civil code and gender justice. Example: Muslim personal law in India, which permits a man to have up to four wives.

Example: Muslim personal law in India, which permits a man to have up to four wives

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Polymetallic nodules

potato-sized concretions of manganese, nickel, copper and cobalt on abyssal plains at 4,000-6,000 metres depth, growing millimetres per million years; India's ISA-allocated exploration area for them lies in the Central Indian Ocean Basin.

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Pondicherry in 1674

Pondicherry in 1674 marks the French East India Company's founding of the settlement by Francois Martin, who became its first governor. The trading post grew into the headquarters of French India and the chief rival base to British Madras. For UPSC it matters in modern history: Anglo-French rivalry, the Carnatic Wars, and the pattern of European colonial port towns.

Example: Francois Martin, founder and first French governor of Pondicherry.

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Pondicherry in 1910

Pondicherry in 1910 marks Sri Aurobindo's arrival on 4 April 1910, fleeing a British sedition prosecution; French territory placed him beyond British reach. He withdrew from politics into yoga and philosophy, and the Sri Aurobindo Ashram formally took shape in 1926. For UPSC it matters in modern history (the close of the revolutionary phase) and in philosophy (integral yoga, The Life Divine).

Example: Sri Aurobindo reached Pondicherry on 4 April 1910.

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Ponna

Ponna was a 10th-century Kannada Jain poet at the court of Rashtrakuta emperor Krishna III, honoured with the title Ubhaya-Kavichakravarti, emperor of poets in two languages, for mastery of Kannada and Sanskrit. His Shantipurana narrates the life of the 16th Jain Tirthankara, Shantinatha. For UPSC he matters in art and culture as one of the Ratnatraya, the three gems of Kannada literature, alongside Pampa and Ranna.

Example: His Shantipurana (c. 950 CE) narrates the life of Tirthankara Shantinatha.

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Poona Pact

The Poona Pact was the 24 September 1932 agreement between Gandhi and B. R. Ambedkar, ending Gandhi's fast against the Communal Award. It abandoned separate electorates for the Depressed Classes in favour of reserved seats within a joint electorate, with 148 reserved seats in provincial legislatures. For UPSC, the Pact is the constitutional root of India's system of reservations for Scheduled Castes and Scheduled Tribes.

Example: The reserved-seat system it created survives today in Articles 330 and 332 of the Constitution, which reserve Lok Sabha and state assembly seats for SCs and STs.

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Poona Pact (September 1932)

The Poona Pact was the agreement signed on 24 September 1932 at Yerwada Jail between Mahatma Gandhi, then fasting against the Communal Award, and B. R. Ambedkar. It replaced separate electorates for the Depressed Classes with reserved seats within joint electorates. For UPSC it matters in modern history (Dalit political representation) and polity (the roots of reservation debates).

Example: Signed at Yerwada Central Jail, Pune, on 24 September 1932.

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Poona Pact of 24 September 1932

The Poona Pact of 24 September 1932 was the settlement between Mahatma Gandhi, fasting at Yerwada Jail, and B. R. Ambedkar over Ramsay MacDonald's Communal Award of August 1932. Ambedkar gave up separate electorates for the Depressed Classes in return for a larger number of reserved seats under joint electorates. For UPSC it matters in the freedom movement and in debates on affirmative action and political representation.

Example: It followed Ramsay MacDonald's Communal Award of August 1932.

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Poona Sarvajanik Sabha

The Poona Sarvajanik Sabha was a socio-political organisation founded at Pune on 2 April 1870 by M. G. Ranade, G. V. Joshi, and S. H. Chiplunkar, as an elected body of 95 members voicing public grievances to the British government. It championed peasants' rights and Indian representation, and is regarded as a precursor of the Indian National Congress. For UPSC it matters among pre-Congress political associations.

Example: G. V. Joshi attended the Delhi Durbar in handspun khadi as the Sabha's delegate.

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Poor irrigation

Poor irrigation means water applied to fields in ways that damage soil and waste water, such as excessive flood irrigation without drainage or using saline groundwater. Over time it causes waterlogging, which drowns roots, and salinisation, where evaporating water leaves salts behind and turns fertile land barren.

Example: Parts of the Indira Gandhi Canal command in Rajasthan developed waterlogging and salinity because canal irrigation expanded faster than drainage.

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poor report quality

Poor report quality is a recurring criticism of Environmental Impact Assessment in India: EIA reports are often prepared by consultants hired by the project proponent, with incomplete or copied baseline data and generic, one-size-fits-all Environmental Management Plans. Because clearances are granted on the basis of these self-reported documents, weak reports directly weaken environmental scrutiny. Reform proposals call for independent data collection, accreditation of consultants and third-party verification.

Example: EIA reports with baseline air-quality data lifted from a different project site, a malpractice repeatedly flagged in official reviews of India's EIA system.

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popular pressure from below

Popular pressure from below is change forced on rulers by mass mobilisation rather than granted from above, through agitations, fasts, strikes and electoral verdicts. In Indian history it explains why the States Reorganisation Commission's recommendations were overtaken by events, with linguistic states conceded after popular movements. For UPSC GS-1 and GS-2, it is a ready framework for questions on federal restructuring. Example: Potti Sriramulu's 1952 fast unto death, which led to the creation of Andhra State in 1953.

Example: Potti Sriramulu's 1952 fast unto death, which led to the creation of Andhra State in 1953

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popular sovereignty

Popular sovereignty is the principle that all political authority flows from the people, who are the ultimate source of legitimacy and can change their rulers and laws. It underlies democracy, universal adult franchise and the idea that constitutions derive from the people's will. For UPSC GS-2 polity, it is the doctrinal base of the Preamble and democratic governance. Example: the Preamble's opening words, 'We the People of India'.

Example: the Preamble's opening words, 'We the People of India'

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popular sovereignty, federalism, and separation of powers

'Popular sovereignty, federalism, and separation of powers' names three basic features of the Indian Constitution repeatedly affirmed by the Supreme Court. Together they mean power flows from the people, is divided between the Union and the states, and is split among the legislature, executive and judiciary. For UPSC GS-2, the trio is shorthand for the basic structure doctrine. Example: Kesavananda Bharati v. State of Kerala, 1973, which propounded the basic structure doctrine.

Example: Kesavananda Bharati v. State of Kerala, 1973, which propounded the basic structure doctrine

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popular sovereignty, written constitutions, legal equality, republicanism

'Popular sovereignty, written constitutions, legal equality, republicanism' lists the political ideals the French Revolution of 1789 spread across Europe: power from the people, law codified in a constitution, all citizens equal before law, and no hereditary monarchy. They became the template for modern liberal-democratic states. For UPSC GS-1 world history, they are the Revolution's ideological legacy. Example: the Declaration of the Rights of Man and of the Citizen, 1789.

Example: the Declaration of the Rights of Man and of the Citizen, 1789

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popularised socialism and secularism

'Popularised socialism and secularism' describes the ideological contribution of the second-phase revolutionaries, led by Bhagat Singh, to the national movement. They argued revolution must end exploitation, not merely replace white rulers with brown ones, carrying socialist and secular ideas into Congress youth politics. For UPSC GS-1 modern history, it links revolutionary terrorism to the Congress Socialist Party and the Karachi resolutions. Example: Bhagat Singh and the Hindustan Socialist Republican Association.

Example: Bhagat Singh and the Hindustan Socialist Republican Association

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popularised the idea of India

'Popularised the idea of India' describes how the Moderates spread the conception of India as a single political unit with shared interests, beyond region, language and religion. Through the Congress platform, newspapers and all-India campaigns, national identity became a mass political idea. For UPSC GS-1 modern history, it is the Moderates' central nation-building achievement. Example: the founding of the Indian National Congress in 1885.

Example: the founding of the Indian National Congress in 1885

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Population ageing

Population ageing is the rising share of older persons in a population, caused by falling fertility and longer life expectancy. It raises the old-age dependency ratio and demands pensions, geriatric healthcare, and elder-care systems. For UPSC it matters in GS-1 society and GS-2 social justice: southern states like Kerala are ageing faster than the Hindi heartland, creating divergent policy needs within India.

Example: Kerala has the highest share of elderly among Indian states (Census 2011).

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Population and the demographic dividend

The demographic dividend is the growth boost a country can get when its working-age population, aged 15 to 64, bulges relative to dependents, freeing resources for investment. India entered this window around 2005 and it may last till mid-century, but the dividend is not automatic: it needs education, jobs, and health. For UPSC it matters in GS-1 and GS-3, linking population, growth, and employment.

Example: The Economic Survey 2016-17 placed India's dividend window from about 2005-06 to 2055-56.

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population at 60 per cent

'Population at 60 per cent' is the weight given to population in the Gadgil formula of 1969, which rationalised Central assistance to states. D.R. Gadgil's formula assigned 60 per cent weight to population and distributed the rest on per capita income, tax effort, special problems and irrigation and power projects. For UPSC GS-3 economy, it is the ancestor of Finance Commission devolution debates. Example: the Gadgil formula adopted by the National Development Council in 1969.

Example: the Gadgil formula adopted by the National Development Council in 1969

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Population density

Population density is the number of people per unit of land area, usually persons per square kilometre. It measures crowding and pressure on land, housing, and services, though a national average hides regional variation. For UPSC it matters in GS-1 geography: high density in the Indo-Gangetic plain versus sparse settlement in Himalayan and desert regions shapes infrastructure and resource planning.

Example: India's density was 382 persons per sq km in Census 2011.

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Population distribution

Population distribution is the spatial pattern of where people live within a country or region, shaped by climate, water, soil fertility, jobs, and history. It explains why the Indo-Gangetic plain is densely settled while the Thar desert and the Himalayas are sparse. For UPSC it matters in GS-1 geography and GS-3 planning, since uneven distribution drives migration and regional imbalance.

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Populist drift

Populist drift is the gradual shift of governments toward short-term, popularity-seeking measures, such as untargeted subsidies and loan waivers, at the cost of long-term investment and fiscal discipline. The term is used in economic and governance analysis to critique competitive welfarism. For UPSC it matters in GS-3 economy (fiscal policy) and GS-2 governance (accountability versus freebies debates).

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portfolio system

The portfolio system is the arrangement by which each member of the Viceroy's Executive Council is placed in charge of a specific department, introduced by Lord Canning in 1861 under the Indian Councils Act. It ended collective responsibility for every decision and created the departmental administration that independent India inherited. For UPSC GS-2 polity, it is the origin of the cabinet portfolio system. Example: Lord Canning's 1861 distribution of departments among Council members.

Example: Lord Canning's 1861 distribution of departments among Council members

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Porto Novo

Porto Novo, now Parangipettai in Tamil Nadu, is remembered for the Battle of Porto Novo on 1 July 1781, when Sir Eyre Coote's East India Company force of about 8,000 defeated Hyder Ali's much larger Mysore army during the Second Anglo-Mysore War. The victory checked Mysore's advance on Madras. For UPSC it matters in modern history: the Anglo-Mysore wars and the French-Mysore alignment.

Example: Sir Eyre Coote defeated Hyder Ali at Porto Novo on 1 July 1781.

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POSCO steel project in Odisha

The proposed 12 million-tonne-per-annum steel plant by South Korea's POSCO at Jagatsinghpur in Odisha, for which an MoU was signed in 2005 as one of India's largest proposed foreign direct investments. The project became a landmark environmental and land-acquisition controversy over forest clearance, displacement of betel-vine farmers and recognition of community rights under the Forest Rights Act, and POSCO withdrew in 2017. It is a standard case study in Indian environmental law.

Example: The project's stalled clearances made it a textbook case of the tension between large industrial investment and community forest rights in India.

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POSH

POSH stands for Prevention of Sexual Harassment, the workplace-safety regime built on the Supreme Court's 1997 Vishaka guidelines and codified in the 2013 Act. It requires employers to prevent unwelcome sexual conduct at work and to provide an internal redressal mechanism for complaints. It matters for UPSC as the standard reference for gender justice, workplace rights and employer liability in GS-1 and GS-2.

Example: Vishaka v. State of Rajasthan (1997), the Supreme Court judgment that framed the first workplace-harassment guidelines

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POSH Act of 2013

The POSH Act of 2013 (Sexual Harassment of Women at Workplace (Prevention, Prohibition and Redressal) Act) makes it mandatory for every organisation with ten or more employees to set up an Internal Committee headed by a woman to hear complaints. It defines sexual harassment broadly, prescribes employer duties and penalties for non-compliance, and provides for a Local Committee at the district level. It matters for UPSC as the key statute on women's workplace safety in GS-1 and GS-2.

Example: Enacted following the Supreme Court's Vishaka guidelines of 1997

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PoSH Act, 2013

The Sexual Harassment of Women at Workplace (Prevention, Prohibition and Redressal) Act, 2013 codified the Supreme Court's Vishaka guidelines of 1997. It requires employers to set up Internal Committees, provides for Local Committees covering the unorganised sector, and defines sexual harassment broadly. For UPSC it connects gender justice, workplace rights, and judicial law-making.

Example: An Internal Committee inquiry into a harassment complaint at a private firm.

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POSHAN

POSHAN, the PM's Overarching Scheme for Holistic Nutrition, is the government's flagship mission-mode programme launched in March 2018 to reduce stunting, undernutrition, anaemia, and low birth weight. It converges anganwadi, health, water, and sanitation schemes and uses technology for real-time monitoring. Renamed Saksham Anganwadi and POSHAN 2.0 in 2021, it matters for UPSC as the core of India's nutrition governance.

Example: Growth monitoring of children under six at anganwadi centres.

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POSHAN Abhiyaan

POSHAN Abhiyaan (PM's Overarching Scheme for Holistic Nutrition), launched on 8 March 2018 from Jhunjhunu in Rajasthan, is the National Nutrition Mission. It converges anganwadi services, health and sanitation programmes to cut stunting, undernutrition, anaemia and low birth weight through technology-based monitoring of beneficiaries. It matters for UPSC as the flagship nutrition and child-development mission in GS-2.

Example: Launched on 8 March 2018 from Jhunjhunu, Rajasthan

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POSHAN Abhiyaan (PM's Overarching Scheme for Holistic Nutrition)

POSHAN Abhiyaan, short for the PM's Overarching Scheme for Holistic Nutrition, is the 2018 nutrition mission targeting malnutrition among children, adolescent girls and mothers. It uses ICT tools such as the ICDS-CAS app for real-time growth monitoring, converges schemes across ministries, and now operates within Mission POSHAN 2.0. It matters for UPSC as the standard example of convergent social-sector governance in GS-2.

Example: Subsumed into Mission POSHAN 2.0 (Saksham Anganwadi and POSHAN 2.0) in 2021-22

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POSHAN Abhiyaan / Mission POSHAN 2.0

Mission POSHAN 2.0 is the integrated nutrition programme formed in 2021-22 by merging POSHAN Abhiyaan, the Supplementary Nutrition Programme and the Scheme for Adolescent Girls under the Saksham Anganwadi and POSHAN 2.0 umbrella. It focuses on the first 1,000 days of life through strengthened anganwadis, take-home rations and behaviour-change communication. It matters for UPSC as the current avatar of India's nutrition policy in GS-2.

Example: Announced in the Union Budget 2021-22

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POSHAN Tracker

POSHAN Tracker is the ICT application launched in 2021 that replaced the earlier ICDS-CAS for real-time monitoring of anganwadi services. It registers pregnant women, lactating mothers, and children, records growth measurements, and tracks take-home ration delivery. It matters for UPSC as an example of technology-driven governance and last-mile accountability in nutrition delivery.

Example: An anganwadi worker logging a child's height and weight on the app during a home visit.

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Poshan Vatikas

Poshan Vatikas are nutri-gardens promoted under the POSHAN Abhiyaan at anganwadi centres, schools, and gram panchayat land to grow fruits, vegetables, and medicinal plants. They aim to improve dietary diversity and address micronutrient deficiencies using locally grown produce. For UPSC they show convergence between nutrition, agriculture, and community participation.

Example: An anganwadi's backyard garden supplying greens for hot cooked meals.

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positive externalities

Positive externalities are benefits of an economic activity that spill over to third parties who did not pay for them, so the social gain exceeds the private gain. Because markets under-provide such goods, the state subsidises them through public spending. For UPSC GS-3 economy, they justify government intervention in education, health and infrastructure. Example: mass immunisation, whose herd protection benefits even the unvaccinated.

Example: mass immunisation, whose herd protection benefits even the unvaccinated

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Positive Indigenisation Lists

The Positive Indigenisation Lists are the Defence Ministry's rolling lists of weapons, systems and components that will no longer be imported after specified dates, now covering over 5,000 items across five lists. They matter as the import-embargo mechanism forcing indigenisation.

Example: Artillery guns and radars on the indigenisation lists

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positive net foreign exchange earnings over five years

'Positive net foreign exchange earnings over five years' is the performance condition for units in India's Special Economic Zones: over a cumulative five-year block from the start of production, a unit's foreign exchange earnings must exceed its outgo. Earnings minus imports and other forex outflows must stay above zero. For UPSC GS-3 economy, it is the core SEZ obligation under the SEZ Act, 2005. Example: the Net Foreign Exchange (NFE) requirement monitored through the SEZ Annual Performance Report.

Example: the Net Foreign Exchange (NFE) requirement monitored through the SEZ Annual Performance Report

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positive programme

The 'positive programme' is the constructive side of the Swadeshi movement: boycott of foreign goods was paired with buy Indian, make Indian and learn Indian. It meant swadeshi enterprises, indigenous schools and nationalist cultural work as the alternative to mere negation. For UPSC GS-1 modern history, it shows how the movement moved from protest to nation-building. Example: the Bengal National College founded in 1906 as part of the national education effort.

Example: the Bengal National College founded in 1906 as part of the national education effort

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post-disaster crisis management phase

The post-disaster crisis management phase covers the activities undertaken after a disaster strikes: emergency response, relief, rehabilitation, recovery and reconstruction. It begins with saving lives and ends with building back better.

Example: the distribution of food and shelter after the Kerala floods of 2018, followed by the Rebuild Kerala initiative, spans the post-disaster crisis management phase

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post-facto clearance

Post-facto clearance means granting environmental clearance to a project that was already built or started operating without the mandatory prior approval. India's EIA framework requires prior clearance precisely so that impacts are assessed before construction begins, and the Supreme Court has repeatedly held that retrospective clearance is alien to environmental jurisprudence. In Alembic Pharmaceuticals Ltd. v. Rohit Prajapati (2020), the Court struck down the practice of ex post facto clearances and imposed heavy compensation on the offending industries.

Example: The draft EIA 2020 notification's proposal to let violation projects be regularised after construction, which drew strong public opposition and remains unfinalised.

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post-facto environmental clearance

Post-facto environmental clearance is clearance granted to a project that has already commenced or completed construction without the prior environmental clearance mandated by the EIA Notification, 2006. The 2017 notification and the 2021 office memorandum created routes to regularise such violations, which the Supreme Court addressed through the Vanashakti v. Union of India litigation, culminating in a July 2026 judgment that barred the executive route for such clearances.

Example: Real estate, hospital and infrastructure projects built without prior clearance had sought regularisation under these instruments.

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post-marital residence

Post-marital residence is the anthropological rule fixing where a couple lives after marriage. The standard types are patrilocal (with the husband's kin, historically dominant in India), matrilocal (with the wife's kin), neolocal (a new household) and avunculocal (with the husband's maternal uncle). It shapes kinship, property and gender relations. For UPSC GS-1 society, it is a basic family-and-marriage concept.

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Post-Matric Scholarship

The Post-Matric Scholarship is a centrally sponsored scheme funding the education of Scheduled Caste, and separately OBC and minority, students after Class 10, covering tuition, maintenance, and other allowances. Implemented through state governments with Direct Benefit Transfer, it is among India's largest education-access interventions. For UPSC it matters in GS-2 social justice and in welfare-scheme questions.

Example: Post-Matric Scholarship for SC students, run by the Ministry of Social Justice and Empowerment.

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Post-mission disposal

Post-mission disposal is the practice of removing a satellite from its operational orbit at the end of its life, either by deorbiting it to burn up in the atmosphere or by moving it to a graveyard orbit well above geostationary altitude. It is a core space-debris mitigation measure: the IADC guidelines recommend clearing low Earth orbit within 25 years, while the US regulator now requires disposal within five years.

Example: A defunct satellite in low orbit fires its remaining fuel to lower its perigee so atmospheric drag pulls it down to burn up harmlessly.

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post-quantum cryptography

Post-quantum cryptography is the development of encryption algorithms that remain secure against attacks by future quantum computers. Today's widely used public-key systems, like RSA and elliptic-curve cryptography, could be broken by Shor's algorithm running on a large enough quantum machine. Standardisation is led by the US National Institute of Standards and Technology, which finalised its first post-quantum standards in 2024.

Example: The ML-KEM standard (based on CRYSTALS-Kyber), finalised by NIST in 2024 for key exchange that resists quantum attacks.

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post-Surat lull

The post-Surat lull is the quiet phase in the national movement after the 1907 Surat split divided the Congress into Moderates and Extremists, compounded by repression that jailed Tilak in 1908. Mass politics stalled until revival began around 1914 to 1916 with the Home Rule movement and the Lucknow reunion. For UPSC, it explains the gap between the Swadeshi years and the Gandhian era in modern-history timelines.

Example: Lucknow session, 1916 (reunion of Moderates and Extremists)

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postal system

A postal system is the organised network, usually state-run, for collecting, carrying and delivering letters and parcels across a country. India's postal system took modern shape with Lord Dalhousie's 1854 reforms introducing uniform low postage, and India Post is today among the world's largest postal networks. For UPSC GS-1 and GS-3, it spans colonial administration and modern financial inclusion. Example: India Post's network of about 1.55 lakh post offices.

Example: India Post's network of about 1.55 lakh post offices

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postconventional level

Postconventional level is the highest level of Lawrence Kohlberg's theory of moral development, where right and wrong are judged by abstract principles rather than rules, approval, or punishment. Its two stages are the social-contract stage, which treats laws as mutual agreements that can be revised, and the universal-principles stage, where conscience based on justice may override the law. It is central to GS-4 (ethics) on moral development and conscience.

Example: Kohlberg's stages of moral development, first proposed in his 1958 doctoral work and elaborated in Essays on Moral Development (1981).

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postind-05

Postind-05 is not a conceptual term but a content-series identifier used to label the fifth item in a post-independence history sequence. Such codes help libraries and courses file, retrieve, and reference study material on India's post-1947 journey in a fixed, predictable order. It serves GS-1 (post-independence India) mainly as an indexing tag rather than examinable content, so aspirants should focus on the events the item covers.

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Potential

In the article's framing, potential is the quantified upside of an approach: for nature-based solutions it means roughly 30 percent of the mitigation needed by 2030, cuts in hazard intensity of about a quarter, and about four-to-one returns on restoration investment, alongside co-benefits for livelihoods and water security. It is a reminder to size an intervention by evidence, not enthusiasm.

Example: Protecting and restoring mangroves is presented as high-potential climate action because it stores carbon, buffers storms and supports fisheries at once.

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potential conflict

Potential conflict is a situation in public life where a person's private interests could, though need not yet, clash with their official duties. It differs from an actual conflict of interest because the clash is only foreseeable, not active, yet ethics codes require such situations to be disclosed and managed early. It matters for GS-4 (probity in governance) and GS-2 (accountability of public servants).

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Potential Fishing Zone (PFZ) advisories

Potential Fishing Zone advisories are INCOIS bulletins that use satellite data on sea-surface temperature, ocean colour and currents to indicate where fish are likely to aggregate.

Example: PFZ advisories disseminated in local languages help artisanal fishermen plan their trips.

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Potential GDP is

Potential GDP is the maximum output an economy can sustain without triggering inflation, determined by labour, capital, and productivity at full employment. The gap between actual and potential GDP, the output gap, guides monetary and fiscal policy: a negative gap argues for stimulus. For UPSC it matters in GS-3 economy, especially in RBI monetary-policy reasoning and growth debates.

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potholes and plunge pools

Potholes and plunge pools are erosional landforms carved by rivers in bedrock. Potholes are circular pits drilled into the channel bed by swirling water armed with stones, a process called abrasion, while a plunge pool is the deep basin scooped out at the base of a waterfall by falling water and boulders. Both are favourite GS-1 (physical geography) examples of fluvial erosion.

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potin

Potin is an ancient copper-based alloy, commonly a mixture of copper with tin or iron, used widely for low-value coinage in the ancient world. In India it is best known from the Satavahana period, whose coinage included potin pieces alongside lead, copper, and silver issues, often bearing animal motifs and the Ujjain symbol. It is relevant for GS-1 (ancient Indian history) questions on numismatics and material culture.

Example: The Satavahana lion-type potin coins struck in the Junnar region.

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Potti Sriramulu

Potti Sriramulu was a Gandhian freedom fighter who fasted unto death from 19 October 1952 demanding a separate Telugu-speaking Andhra state out of Madras Presidency. His death on 15 December 1952 sparked widespread riots, forcing Nehru to concede Andhra State, formed in October 1953. For UPSC he matters in post-independence history: his sacrifice triggered the States Reorganisation Commission and linguistic reorganisation.

Example: Andhra State was formed on 1 October 1953 with Kurnool as its capital.

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poultry

Poultry is the rearing of chickens, ducks and other birds for eggs and meat, India's fastest-growing animal-protein sector. India is among the world's top egg and broiler producers, with integrated private players alongside backyard flocks. For UPSC it is the protein-sector success story alongside dairy.

Example: Backyard poultry flocks giving tribal households eggs and cash income show the sector's inclusive reach.

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Poultry and livestock

Poultry and livestock cover the rearing of birds, cattle, sheep, goats, and pigs for meat, milk, eggs, and draught power. The sector supports rural incomes and nutrition and is counted in India's Livestock Census, held every five years. For UPSC it matters in GS-3 agriculture: allied activities, the white revolution in dairy, and schemes such as the National Livestock Mission.

Example: India's 20th Livestock Census was conducted in 2019.

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Poverty and Un-British Rule in India

Poverty and Un-British Rule in India is Dadabhai Naoroji's 1901 book that systematised the drain of wealth theory, arguing that British rule impoverished India by siphoning its resources to Britain. Drawing on trade and finance data, it estimated the annual drain and linked it to recurring famines. For UPSC it is the foundational text of early nationalist economic critique.

Example: Its use of export-import statistics to quantify the annual drain.

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Poverty and Un-British Rule in India'

Poverty and Un-British Rule in India is Dadabhai Naoroji's 1901 book that systematically argued British rule was impoverishing India through the drain of wealth: home charges, salaries and pensions of British officials, and profits remitted to Britain. It became the economic manifesto of early nationalism. For UPSC it matters in modern history (the economic critique of colonialism) and in GS-3 poverty debates.

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Poverty count

A poverty count is the number or share of people living below a poverty line, usually expressed as the headcount ratio. In India it is estimated from NSSO consumption surveys using Tendulkar and earlier Lakdawala lines, while the Multidimensional Poverty Index captures deprivations beyond income. For UPSC it matters in GS-3 inclusive growth: measurement debates and the Rangarajan versus Tendulkar estimates.

Example: The Tendulkar Committee estimated 21.9% of Indians below the poverty line in 2011-12.

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poverty line

A poverty line is the minimum level of income or consumption below which a person is counted as poor, set in India on the recommendations of expert committees such as the Tendulkar Committee and the Rangarajan Committee. It turns poverty measurement into a headcount that the state can target with welfare programmes and track over time. For UPSC, poverty line debates recur in economy questions on measurement, inequality and welfare targeting.

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Poverty line

Poverty line is the minimum level of income or consumption expenditure below which a person is counted as poor. In India it is fixed by expert committees: the Tendulkar Committee (2009) set it at Rs 33.33 a day in urban and Rs 27.20 in rural areas, while the Rangarajan Committee (2014) proposed Rs 47 urban and Rs 32 rural per day. It matters for UPSC as the basis of BPL targeting and GS-3 questions on inclusive growth and poverty estimation.

Example: Tendulkar Committee (2009)

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Power and energy

Power and energy is the UPSC shorthand for the energy sector of the economy, covering electricity generation, transmission and distribution, plus oil, gas, coal and renewables. Key themes are installed capacity and the energy mix, discom finances, the National Solar Mission, energy security and the transition to clean sources. It matters for UPSC because GS-3 repeatedly asks about infrastructure, resource mobilization and sustainable development through energy policy.

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power asymmetry

Power asymmetry is the unequal bargaining strength between contracting parties, as between a small farmer and a large agri-business buyer. It risks unfair terms in contract farming and land leasing, which regulation must correct. For UPSC it is the equity critique of market-led land arrangements.

Example: A lone farmer negotiating price with a monopoly processor faces the power asymmetry reformers warn about.

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Power over bills

Power over bills is the President of India's authority under Article 111 over legislation passed by Parliament: assent to it, withhold assent, or return it (except a money bill) for reconsideration. This gives the President absolute, suspensive and pocket vetoes, though there is no qualified veto as in the United States. It matters for UPSC because prelims frequently tests the three veto types and the difference between the President's and the Governor's options under Article 200.

Example: Article 111 of the Constitution

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Powerchip Semiconductor Manufacturing Corporation (PSMC)

Powerchip Semiconductor Manufacturing Corporation is a Taiwanese chip foundry and the technology partner for India's first commercial semiconductor fab, being built by Tata Electronics at Dholera, Gujarat, with about Rs 91,000 crore in investment. Under the partnership PSMC provides process technology, fab construction support and training for mature nodes such as 28, 55 and 90 nanometres.

Example: The Dholera fab will use PSMC's technology to make power-management chips, display drivers and microcontrollers for automotive and electronics markets, with first chips expected by late 2026.

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Praamaanik

Praamaanik is a blockchain-enabled solution under India's National Blockchain Framework that verifies the origin of mobile applications. It uses the ledger's tamper-proof record to certify app authenticity and security.

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Prabhakaravardhana

Prabhakaravardhana is the Pushyabhuti king of Thanesar who ruled in the early 7th century CE and was the father of Harshavardhana and Rajyavardhana. Married to Yashomati, he extended Vardhana influence in the upper Ganga-Yamuna doab before his death around 605 CE. He is known mainly through Banabhatta's Harshacharita. He matters for UPSC because he anchors the genealogy of Harsha's empire, a staple of ancient-history questions on the post-Gupta kingdoms.

Example: Banabhatta's Harshacharita

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Prabhavatigupta

Prabhavatigupta is the daughter of the Gupta emperor Chandragupta II who married the Vakataka king Rudrasena II. After his early death she ruled as regent for her minor sons Divakarasena and Pravarasena II, issuing land grants in her own name. Her Poona and Riddhapur copper-plate inscriptions proudly record her Gupta parentage. She matters for UPSC as the clearest evidence of Gupta-Vakataka matrimonial diplomacy and of a woman exercising sovereign authority in ancient India.

Example: Poona copper-plate inscription

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practical, universal ethic of state

A practical, universal ethic of state is a moral law for state conduct that binds all rational actors and is meant to be applied in practice, not merely preached. In UPSC ethics this idea is associated with Immanuel Kant's categorical imperative: act only on maxims that could become universal law. It supports GS-4 discussions on deontology, integrity, and rule-based decision-making by public servants.

Example: Kant's formulation of the categorical imperative in the Groundwork of the Metaphysics of Morals (1785).

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Pradakshina patha

Pradakshina patha is the circumambulatory passage around the garbhagriha (sanctum) of a Hindu temple or around a Buddhist stupa, used for ritual clockwise walking that keeps the sacred object on the devotee's right. It appears in Nagara and Dravida temples and in early Buddhist architecture such as Sanchi. It matters for UPSC because prelims art-and-culture questions test temple components and the ritual logic behind their layout.

Example: Sanchi Stupa

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Pradhan Mantri Awas Yojana

The Pradhan Mantri Awas Yojana, launched in 2015, aims to provide pucca houses with basic amenities to all eligible rural and urban households. Its rural arm, PMAY-Gramin, operational from 2016, and the urban arm work through beneficiary-led construction, credit-linked subsidy, and partnership models. For UPSC it exemplifies welfare-state housing policy and cooperative federalism.

Example: A rural family receiving assistance to build a pucca house with toilet and LPG connection.

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Pradhan Mantri Dakshta Aur Kushalta Sampann Hitgrahi

The Pradhan Mantri Dakshta Aur Kushalta Sampann Hitgrahi, or PM-DAKSH, is a Central Sector Scheme of the Ministry of Social Justice and Empowerment launched in 2020-21. It provides skill training for employability to SCs, OBCs, de-notified tribes, economically weaker sections, and safai mitras including waste pickers, with no income limit for SC and DNT candidates. For UPSC it links social justice with skill development.

Example: Free short-term training courses offered through empanelled government and private institutes.

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Pradhan Mantri Fasal Bima Yojana (PMFBY)

The Pradhan Mantri Fasal Bima Yojana is the national crop-insurance scheme launched in kharif 2016 with farmer premiums capped at 2 per cent for kharif, 1.5 per cent for rabi and 5 per cent for horticultural crops. The Centre and states share the remaining actuarial premium paid to empanelled insurers, and claims are assessed using technology including satellite imagery. For UPSC it is the key instrument for shielding farm incomes from natural calamities, debated for delayed claim settlements.

Example: A cotton farmer in Marathwada whose crop fails from pink bollworm and drought can seek compensation under PMFBY's localised-calamity provisions.

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Pradhan Mantri Garib Kalyan Anna Yojana

The Pradhan Mantri Garib Kalyan Anna Yojana is the free-foodgrain programme launched during COVID-19 and merged with the NFSA from January 2024, giving 81 crore beneficiaries 5 kg of grain per person per month free of cost. Initially a pandemic relief top-up, it became the permanent zero-price PDS. For UPSC it is the largest free-food programme in the world.

Example: A priority household collecting its monthly 5 kg per person free under the merged scheme shows PMGKAY's scale.

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Pradhan Mantri Jan Arogya Yojana

The Pradhan Mantri Jan Arogya Yojana, launched in September 2018 under Ayushman Bharat, is the world's largest health assurance scheme, covering about 55 crore beneficiaries identified from SECC 2011 data. It provides Rs 5 lakh per family per year for secondary and tertiary hospitalisation, cashless and portable across empanelled hospitals. For UPSC it is central to health policy and fiscal federalism debates.

Example: A family's cashless surgery at an empanelled private hospital in another state.

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Pradhan Mantri Jan Dhan Yojana (PMJDY)

Pradhan Mantri Jan Dhan Yojana (PMJDY) is the national financial-inclusion mission launched on 28 August 2014 to give every unbanked household a zero-balance bank account with a RuPay debit card and accident insurance. It created the banking leg of the JAM trinity used for direct benefit transfer of subsidies. It matters for UPSC because it is the foundation scheme behind GS-3 questions on financial inclusion, DBT and the expansion of formal banking to the poor.

Example: Launched on 28 August 2014

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Pradhan Mantri Kaushal Vikas Yojana

The Pradhan Mantri Kaushal Vikas Yojana, launched in 2015 by the Ministry of Skill Development and Entrepreneurship, provides free short-term skill training to youth with certification and placement support. It includes Recognition of Prior Learning for workers with informal skills, and successive phases have expanded sector coverage and industry linkage. For UPSC it anchors questions on skilling, demography, and employability.

Example: Recognition of Prior Learning certification for an experienced mason.

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Pradhan Mantri Krishi Sampada Yojana

The Pradhan Mantri Krishi Sampada Yojana is the umbrella scheme of the Food Processing Ministry integrating cold chains, mega food parks, agro-processing clusters and food-safety infrastructure. It aims to cut post-harvest losses and modernise processing from farm gate to retail. For UPSC it is the flagship food-processing programme, distinct from the irrigation PMKSY.

Example: A mega food park with common processing lines and cold storage built under the scheme shows its integrated design.

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Pradhan Mantri Krishi Sinchai Yojana

The Pradhan Mantri Krishi Sinchai Yojana is the 2015 irrigation mission with the goals Har Khet Ko Pani and More Crop Per Drop, converging AIBP, watershed and micro-irrigation programmes. It must not be confused with the identically abbreviated food-processing scheme. For UPSC, distinguishing the two PMKSYs is essential exam hygiene.

Example: Its Per Drop More Crop component subsidising drip irrigation is the scheme's best-known face.

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Pradhan Mantri Matsya Sampada Yojana

Pradhan Mantri Matsya Sampada Yojana is the flagship fisheries scheme launched on 10 September 2020 with the highest-ever sectoral investment of Rs 20,050 crore for 2020-21 to 2024-25. Run by the Department of Fisheries, it funds the full value chain from hatcheries and cold chains to marketing, aiming to add 70 lakh tonnes of fish production and reach Rs 1 lakh crore in exports. It matters for UPSC as the Blue Revolution's flagship and a staple of GS-3 allied-sector questions.

Example: Launched on 10 September 2020

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Pradhan Mantri Matsya Sampada Yojana (PMMSY)

The Pradhan Mantri Matsya Sampada Yojana is the 2020 flagship fisheries scheme with Rs 20,050 crore outlay to double fish production, modernise harbours and build cold chains. It targets 22 million tonnes of fish output and welfare of fishers and fish farmers. For UPSC it is the Blue Revolution's funding engine.

Example: A modern fishing harbour with ice plants built under PMMSY shows the scheme's infrastructure thrust.

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Pradhan Mantri MUDRA Yojana (PMMY)

The Pradhan Mantri MUDRA Yojana is the Centre's micro-enterprise credit scheme launched on 8 April 2015 with the slogan fund the unfunded. It gives collateral-free loans to non-corporate, non-farm micro units through banks, NBFCs and microfinance institutions, in Shishu, Kishore and Tarun slabs, with Tarun Plus added in 2024. It is a core UPSC GS-3 topic on financial inclusion.

Example: Shishu covers loans up to Rs 50,000 for first-time borrowers

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Pradhan Mantri Surakshit Matritva Abhiyan

The Pradhan Mantri Surakshit Matritva Abhiyan, launched in 2016, provides free assured antenatal check-ups by specialists on the 9th of every month at designated facilities. It targets undetected high-risk pregnancies to reduce maternal and infant mortality, and encourages private doctors to volunteer their services. For UPSC it illustrates targeted maternal health intervention within the NHM framework.

Example: A pregnant woman's free second-trimester check-up by an obstetrician at a district hospital.

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Pradhan Mantri Ujjwala Yojana

Launched on 1 May 2016 at Ballia, Uttar Pradesh, the Pradhan Mantri Ujjwala Yojana gives free LPG connections, with Rs 1,600 support per connection, to women of Below Poverty Line households to replace smoky chulhas. It aims to cut indoor air pollution and the drudgery of collecting firewood, and it was followed by Ujjwala 2.0 in 2021 for migrant and left-out households.

Example: A BPL woman receiving a deposit-free LPG connection under PMUY no longer cooks over biomass smoke linked to respiratory illness; over 9 crore connections have been issued under the scheme.

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Prafulla Chaki

Prafulla Chaki is the Bengali revolutionary of the Anushilan Samiti who, with Khudiram Bose, threw a bomb at a carriage in Muzaffarpur on 30 April 1908 targeting the unpopular magistrate Douglas Kingsford. The bomb mistakenly killed two British women, and Chaki shot himself to avoid capture when cornered by police. He matters for UPSC because the Muzaffarpur bombing is a landmark of the early revolutionary movement and a recurring prelims and mains question.

Example: Muzaffarpur bombing, 30 April 1908

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PRAGATI

PRAGATI, Pro-Active Governance and Timely Implementation, is a multi-modal platform launched in March 2015 under which the Prime Minister reviews governance through monthly video conferences with Union secretaries and state chief secretaries. It tracks public grievances, stalled infrastructure projects, and flagship programmes on a single screen. For UPSC it illustrates cooperative federalism and technology-enabled accountability.

Example: Review of delayed highway and railway projects in a PRAGATI sitting.

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PRaGeD Mission

the Paediatric Rare Genetic Disorders mission, which maps genes and variants behind rare childhood diseases to enable targeted therapies.

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pragmatic reset

Pragmatic reset is a diplomatic term for a deliberate decision by states to set aside recent tensions and rebuild a working relationship based on interests rather than past grievances. It usually involves resumed dialogue, confidence-building steps, and compartmentalising disputes while cooperating wherever possible. It is useful for GS-2 (international relations) answers on India's neighbourhood and great-power engagement.

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Pragyan

Pragyan is the six-wheeled solar-powered rover that rode to the Moon aboard Chandrayaan-3's Vikram lander in August 2023, the successor to Chandrayaan-2's rover which never got to operate. It traversed the lunar south pole for about one lunar day, using its APXS and LIBS instruments to analyse soil composition, and confirmed the presence of sulphur along with aluminium, calcium, iron and other elements.

Example: Pragyan's in-situ measurements gave India the first direct chemical assay of soil at the Moon's south pole.

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PRAHAAR

PRAHAAR is India's first publicly released National Counter-Terrorism Policy and Strategy, unveiled by the Ministry of Home Affairs on 23 February 2026. Its seven pillars, Prevention, Response, Aggregating internal capacities, Human rights, Attenuating conditions, Aligning international efforts and Recovery, spell the acronym. It matters because it marks India's shift from a reactive to a pre-emptive, intelligence-led counter-terror doctrine with a whole-of-government approach.

Example: MHA's seven-pillar counter-terrorism doctrine, February 2026

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PRAHAAR (February 2026)

PRAHAAR is India's first publicly released National Counter-Terrorism Policy and Strategy, unveiled by the Ministry of Home Affairs on 23 February 2026. Its seven pillars, Prevention, Response, Aggregating internal capacities, Human rights, Attenuating conditions, Aligning international efforts and Recovery, spell the acronym. It matters because it marks India's shift from a reactive to a pre-emptive, intelligence-led counter-terror doctrine with a whole-of-government approach.

Example: MHA's seven-pillar counter-terrorism doctrine, February 2026

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Prajapati

Prajapati is the Vedic deity called the lord of creatures, who in the later Vedic texts such as the Shatapatha Brahmana becomes a creator god and progenitor of gods, demons and mankind. In Puranic Hinduism his creative role is absorbed into Brahma, one of the Trimurti. He matters for UPSC because the evolution from Vedic nature gods to Puranic deities is a standard ancient-history theme, and Prajapati appears in questions on Vedic religion and mythology.

Example: Shatapatha Brahmana

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prakaras

Prakaras are the concentric walled enclosures that ring the sanctum of a Hindu temple, each with its own gopurams, shrines, and courtyards. Typical of the Dravida style of Tamil Nadu, successive prakaras mark a graded journey from the outer world toward the sacred centre. They are important for GS-1 (art and culture) answers on temple architecture.

Example: The Ranganathaswamy temple at Srirangam, famous for its seven concentric prakaras.

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Prakrit

Prakrit refers to the group of Middle Indo-Aryan vernacular languages, including Pali, Ardhamagadhi, Shauraseni, and Maharashtri, spoken and written roughly from the sixth century BCE to the first millennium CE. Ashokan edicts, the Jain canon, and early Sanskrit drama used Prakrits. It matters for UPSC as the linguistic bridge between Sanskrit and modern Indo-Aryan languages, and as the medium of early Buddhist and Jain literature.

Example: Ashoka's edicts were inscribed in Prakrit using Brahmi script so ordinary people could understand them.

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Pramana

Pramana is a valid means of true knowledge in Indian epistemology, such as perception, inference, comparison, testimony, postulation or non-apprehension. Schools differ in how many they accept, from Charvaka's single perception to the six of classical Mimamsa and Vedanta, so the count is a reliable classification device in answers.

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pramanas

Pramanas are the valid means of knowledge in Indian epistemology, most systematically analysed by the Nyaya school as perception, inference, comparison and verbal testimony. They let the essayist ask not just what is true but how we can rightly claim to know it. They are the Indian philosophy syllabus's standard answer to the question of evidence.

Example: The Nyaya school's classification of pramanas into pratyaksha, anumana, upamana and shabda.

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Pramathanath Mitra

Pramathanath Mitra is the Calcutta barrister who co-founded the Anushilan Samiti in 1902 with Satish Chandra Basu, creating Bengal's first organized revolutionary society. Through physical-training clubs that doubled as secret cells, he helped channel the anti-partition agitation into militant nationalism. He matters for UPSC because the Anushilan Samiti is the starting point of the revolutionary movement in Bengal, a fixed topic in modern-history questions on extremism.

Example: Anushilan Samiti (1902)

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Prambanan

Prambanan is the largest Hindu temple complex in Indonesia, located in Central Java and dedicated to the Trimurti of Shiva, Vishnu and Brahma. Built in the 9th century by Rakai Pikatan of the Mataram kingdom, its soaring Shiva temple rises about 47 metres. It is a UNESCO World Heritage Site. It matters for UPSC because it is prime evidence of Indian cultural influence in Southeast Asia, asked in ancient-history and art-and-culture questions.

Example: Rakai Pikatan of the Mataram kingdom

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prants

Prants were the provinces into which the Maratha Swarajya was divided for administration, each placed under a subedar and further split into districts (tarafs or parganas) and villages (mauzas). This provincial layer sat between the Chhatrapati's central administration, aided by the Ashtapradhan council, and local revenue officials. Prants appear in GS-1 (medieval Indian history) questions on Maratha polity.

Example: Shivaji's division of his kingdom into prants, each headed by a subedar.

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Prarthana Samaj

Prarthana Samaj is the socio-religious reform movement founded in Bombay in 1867 by Atmaram Pandurang and led by figures such as M. G. Ranade and R. G. Bhandarkar. Inspired by the Brahmo Samaj, it preached monotheism, denounced caste discrimination and idol worship, and promoted widow remarriage and women's education. It matters for UPSC because nineteenth-century reform movements are a core modern-history topic, and the Samaj anchors questions on western Indian reform.

Example: Founded in Bombay, 1867

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PRASAD

PRASAD (Pilgrimage Rejuvenation and Spiritual Advancement Drive) is a Ministry of Tourism scheme launched in 2014-15 for the integrated development of pilgrimage destinations: roads, last-mile connectivity, sanitation, interpretation centres and visitor amenities. It targets holistic circuit-level development rather than isolated monuments. For UPSC it matters as the tourism-ministry counterpart to heritage schemes like HRIDAY, linking religious tourism to local economies and employment.

Example: Varanasi's ghat and corridor development work was taken up under PRASAD-style integrated pilgrimage planning.

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Prasenajit

Prasenajit is the king of Kosala in the 6th century BCE, ruling from Shravasti as a contemporary of the Buddha. Buddhist texts portray him as a patron and interlocutor of the Buddha, and his matrimonial alliance with Magadha linked Kosala to Bimbisara's dynasty. He matters for UPSC because the sixteen mahajanapadas are a foundational ancient-history topic, and Prasenajit is the signature ruler asked about for Kosala.

Example: Shravasti

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prashasti

A prashasti is a formal eulogy composed in ornate Sanskrit verse or prose to praise a king's genealogy, conquests, and virtues, usually engraved on stone pillars or copper plates. Court poets wrote them as royal propaganda, but historians mine them as datable evidence of political history. Prashastis are standard GS-1 (ancient India) source material.

Example: The Prayag Prashasti of Samudragupta, composed by his court poet Harisena on the Allahabad pillar.

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prashastis

Prashastis are court eulogies in classical Sanskrit that celebrated rulers through genealogies, military victories, and moral praise, inscribed on pillars, rocks, and temple walls. As deliberate self-praise they must be read critically, yet they fix chronologies and record territorial claims found nowhere else. They are staple primary sources for GS-1 (ancient Indian history).

Example: The Aihole prashasti of the Chalukya king Pulakeshin II, composed by Ravikirti in 634 CE.

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Prasna

Prasna is the short form of the Prasna Upanishad, one of the principal (mukhya) Upanishads attached to the Atharvaveda. It is structured as six questions put by six seekers to the sage Pippalada, covering creation, prana, the self and meditation on Om. It matters for UPSC because the Upanishads are the philosophical core of the later Vedic corpus, and prelims questions test their names, associated Vedas and key doctrines.

Example: Sage Pippalada

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Prasthanatrayi

Prasthanatrayi is the triple foundation of Vedanta: the Upanishads, the Brahma Sutras and the Bhagavad Gita, on which every Vedanta Acharya had to write commentaries. It matters because those commentaries converted abstract philosophy into teachable theology and supplied the intellectual framework that later Bhakti traditions inherited.

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Prataparudra

Prataparudra is Prataparudra II, the last great Kakatiya ruler of Warangal (r. 1289-1323). He repeatedly repelled invasions from the Delhi Sultanate before being defeated by Ulugh Khan, the future Muhammad bin Tughlaq, after which Kakatiya rule collapsed and the Musunuri Nayakas led the Telugu resistance. He matters for UPSC because the Kakatiyas are the key Deccan dynasty between the Cholas and Vijayanagara, tested in medieval-history questions.

Example: Warangal

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Pratibimb

Pratibimb is the Reserve Bank of India's AI-based system that detects fraudulent digital transactions in real time by learning patterns in payment data. It flags suspicious transfers as they happen, strengthening the safety of India's fast-growing digital payments ecosystem.

Example: When a fraudster tries to siphon money through a mule account, Pratibimb-type models can raise an alert before the funds leave the banking system.

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Pratiharas

Pratiharas is the short name of the Gurjara-Pratihara dynasty that ruled from Kannauj between the 8th and 11th centuries CE. Nagabhata I checked Arab advances into western India, and Mihira Bhoja (c. 836-885) raised the empire to its peak. They fought the Palas and Rashtrakutas in the tripartite struggle for Kannauj. They matter for UPSC because this three-way contest is the central political narrative of early medieval north India.

Example: Mihira Bhoja

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Pratiloma

Pratiloma is a marriage in which a woman of a higher varna weds a man of a lower varna, the reverse of the approved anuloma union. Dharmashastra texts condemn pratiloma marriages and assign their offspring a degraded ritual status, with the Manusmriti deriving the Chandala from such a union. It matters for UPSC because ancient social institutions, varna rules and their legal codification are standard topics in ancient-history and society questions.

Example: Manusmriti

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Pratishthana

Pratishthana is the ancient capital of the Satavahana dynasty, identified with modern Paithan in Maharashtra on the Godavari river. A flourishing trade and Buddhist centre, it is mentioned in the Periplus of the Erythraean Sea as a great inland mart of the Deccan. It matters for UPSC because Satavahana history is built around its capitals and trade networks, and Pratishthana appears in prelims questions on Deccan dynasties.

Example: Modern Paithan, Maharashtra

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Pratyaksha

Pratyaksha is direct perception, knowledge gained through the senses in contact with their objects, and it is the one pramana accepted by every Indian school including Charvaka. It matters as the common floor of Indian epistemology and as the sole foundation on which the materialist school builds its entire system.

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Pravasi Bharatiya Divas

Pravasi Bharatiya Divas is observed on 9 January to mark Mahatma Gandhi's return from South Africa in 1915, honouring the contribution of the Indian diaspora to the nation. Celebrated since 2003, its conventions confer the Pravasi Bharatiya Samman awards on eminent overseas Indians. It matters for UPSC because diaspora engagement is a recurring GS-2 topic on Indian foreign policy, and the date and its Gandhian link are favourite prelims facts.

Example: 9 January 1915, Gandhi's return from South Africa

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Prayag

Prayag is the ancient name of Allahabad, now Prayagraj, situated at the Triveni Sangam where the Ganga and Yamuna meet the mythical Saraswati. One of Hinduism's holiest pilgrimage sites, it hosts the Kumbh and Ardh Kumbh melas and was praised in the Prayag Prashasti. It matters for UPSC because sacred geography, pilgrimage circuits and ancient urban centres recur in prelims art-culture and history questions.

Example: Triveni Sangam

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Prayag assembly

Prayag assembly is the great quinquennial religious assembly held by Harshavardhana at Prayag, described by the Chinese pilgrim Hiuen Tsang. Every five years Harsha gathered Buddhist, Jain and Brahmanical scholars and distributed his accumulated treasury in charity over several weeks. It matters for UPSC because it illustrates Harsha's religious eclecticism and state patronage, and Hiuen Tsang's account is a primary source tested in ancient-history questions.

Example: Described by Hiuen Tsang

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Prayag Prashasti

Prayag Prashasti is the Allahabad pillar inscription that eulogizes the Gupta emperor Samudragupta, composed in Sanskrit by his court poet Harisena. It records his conquests across Aryavarta and Dakshinapatha, his patronage of learning and his Ashvamedha sacrifice, making it the single most important source for Gupta political history. It matters for UPSC because inscriptions as historical sources, and this prashasti in particular, are among the most-tested ancient-history topics.

Example: Harisena, court poet of Samudragupta

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Prayaga alms assembly

Prayaga alms assembly is Harshavardhana's great almsgiving (mahadana) ceremony at the Prayag sangam, held every five years according to Hiuen Tsang's account. The king emptied his treasury in charity to Buddhists, Jains, Brahmanas and the poor, keeping only his personal ornaments. It matters for UPSC because it is the classic illustration of dana as statecraft in ancient India and of the religious tolerance of Harsha's reign.

Example: Hiuen Tsang's account of Harsha's reign

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Prayaga-Prashasti

Prayaga-Prashasti is an alternate spelling of the Prayag Prashasti, the Allahabad pillar inscription composed by Harisena in praise of the Gupta emperor Samudragupta. Written in ornate Sanskrit, it details his military campaigns, his subjugation of frontier kings and his performance of the Ashvamedha. It matters for UPSC for the same reason as the Prayag Prashasti: it is the foundational epigraphic source for reconstructing Gupta imperial history.

Example: Harisena

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Prayers

Prayers, in the UPSC context, refers to devotional practice as a social and historical force, from Vedic yajnas to Bhakti congregational singing and the reformist stress on simple prayer by movements like the Brahmo Samaj and Arya Samaj. Questions frame prayer as worship, community identity and reform rather than as theology. It matters for UPSC because socio-religious reform and Bhakti are recurring themes in history and culture papers.

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pre-censorship

Pre-censorship is a system in which newspapers, films, or broadcasts must obtain official approval before publication or release, rather than being punished after the fact. It is the strictest form of state control over expression and is generally seen as incompatible with a free press in a democracy. It is relevant for GS-2 (polity) on freedom of speech under Article 19(1)(a).

Example: The press censorship imposed during the National Emergency of 1975-77.

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Pre-Conception and Pre-Natal Diagnostic Techniques (PCPNDT) Act, 1994

Pre-Conception and Pre-Natal Diagnostic Techniques (PCPNDT) Act, 1994 is the law prohibiting sex selection and the disclosure of the sex of a foetus in India. It regulates genetic counselling centres, laboratories and ultrasound clinics, bans advertisements for sex determination, and was amended in 2003 to cover pre-conception techniques. It matters for UPSC because it is the legislative answer to the declining child sex ratio, a staple of GS-1 society and GS-2 social-justice questions.

Example: Amended in 2003

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pre-disaster planning

Pre-disaster planning is the advance preparation of strategies, resources and responsibilities before a disaster strikes: hazard maps, evacuation plans, stockpiles, communication protocols and clear institutional roles. It is the core of the preparedness phase.

Example: Odisha's pre-disaster planning before Cyclone Fani (2019) positioned shelters, volunteers and relief supplies, enabling the evacuation of over a million people

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pre-disaster risk management phase

The pre-disaster risk management phase covers all disaster management activities undertaken before a hazard strikes: prevention, mitigation and preparedness. It includes risk assessment, early warning systems, land-use planning and capacity building.

Example: the India Meteorological Department's cyclone forecasts and Odisha's evacuation drills are pre-disaster risk management in action

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pre-puberty marriage

Pre-puberty marriage is the marriage of a girl before she attains puberty, a practice rooted in patriarchal custom that endangers health, ends schooling, and violates child rights. Reformers and colonial-era legislation targeted it, and independent India now prohibits child marriage through the Prohibition of Child Marriage Act, 2006. It is examined in GS-1 (social issues) and GS-2 (welfare legislation).

Example: The Child Marriage Restraint Act of 1929 (Sarda Act), which set minimum ages of 14 for girls and 18 for boys.

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Preamble

Preamble is the introductory statement of the Constitution beginning We the People of India, declaring India a sovereign, socialist, secular, democratic republic and promising justice, liberty, equality and fraternity. The 42nd Amendment (1976) added socialist, secular and integrity. The Supreme Court holds it a part of the Constitution and a key to interpreting its spirit. It matters for UPSC because its keywords, amendment history and basic-structure status are tested in both prelims and mains.

Example: 42nd Constitutional Amendment, 1976

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Precautionary approach

The precautionary approach is the principle that lack of full scientific certainty should not delay measures to prevent serious or irreversible environmental harm, and conversely that risky activities should be restrained until their impacts are understood.

Example: Calls to pause commercial deep-sea mining until the ISA Mining Code and baseline science are in place invoke this approach.

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precautionary principle

The precautionary principle is an environmental law doctrine holding that lack of full scientific certainty must not delay action to prevent serious or irreversible environmental harm. It shifts the burden of proof toward those proposing potentially damaging activity. Enshrined in Principle 15 of the 1992 Rio Declaration, it is core to GS-3 (environment) answers on sustainable development and environmental jurisprudence.

Example: The Supreme Court's Vellore Citizens' Welfare Forum judgment (1996), which read the principle into Indian environmental law.

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precision agriculture

Precision agriculture is the practice of managing each patch of a field according to its measured need, using data from sensors, drones and soil tests, rather than applying water, fertiliser and pesticide uniformly. Kisan drones serve it in two ways: multispectral mapping diagnoses the field, and spray drones deliver inputs exactly where the diagnosis says they are needed.

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Precision agriculture and drones

Precision agriculture is the use of GPS, sensors, satellite imagery and drones to apply water, fertiliser and pesticides exactly where crops need them, replacing uniform blanket application. Drones survey crop health, spray inputs and map fields, cutting input costs and chemical runoff. For UPSC it is the flagship example of technology raising both farm productivity and input-use efficiency.

Example: A drone spraying pesticide over a cotton field in Telangana covers in hours what manual spraying takes days to finish, with far less chemical drift.

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precision medicine

Precision medicine is an approach to treatment that tailors prevention, diagnosis and therapy to an individual patient's genes, environment and lifestyle rather than using one-size-fits-all protocols. It relies on genomic sequencing, biomarkers and data analytics to predict which drug or dose will work for a specific patient. Its best-known applications are in oncology, where tumour profiling guides targeted therapy.

Example: Testing breast-cancer patients for HER2 gene overexpression to decide whether the targeted drug trastuzumab is likely to help them.

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Precision medicine

an approach that tailors healthcare interventions to an individual's genetic makeup, environment and lifestyle, shifting medicine from one-size-fits-all to personalised care; India's programmes target NCDs, rare disorders and pandemics.

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preconventional level

Preconventional level is the first level of Lawrence Kohlberg's theory of moral development, where behaviour is guided by obedience and self-interest rather than by social norms. Its two stages are obedience driven by fear of punishment, and action driven by personal reward or fair exchange. Though typical of children, it explains adult reasoning stuck at self-interest. It is part of GS-4 (ethics) on moral development.

Example: Kohlberg's stage theory of moral development.

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predicate offence

A predicate offence is the underlying crime, such as drug trafficking, corruption or fraud, whose proceeds become the subject of money laundering. Under PMLA, laundering can only be charged if linked to a scheduled predicate offence. It matters because the predicate anchors the entire prosecution.

Example: Bribery as the predicate offence behind a laundering case

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predictive maintenance

Predictive maintenance uses artificial intelligence and sensor data to forecast when industrial equipment is likely to fail, so repairs happen before breakdowns occur. Machine-learning models detect subtle patterns in vibration, temperature or current draw that precede faults. It reduces unplanned downtime and maintenance costs compared with fixed-schedule servicing or run-to-failure strategies.

Example: Airlines analysing jet-engine sensor data to replace components before in-flight failures occur, avoiding costly unscheduled grounding.

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Prefer three to four genuine options over six sketchy ones

Prefer three to four genuine options over six sketchy ones is a mains answer-writing guideline advising aspirants to develop a few well-explained, substantiated points rather than listing many shallow ones. Examiners reward depth, examples and interlinkages, so four argued dimensions outscore six one-line bullets. It matters for UPSC because answer structure decides mains marks, and this principle underlies introductions, body paragraphs and conclusions in GS answers.

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Preferential Trade Agreement

Preferential Trade Agreement is a trade pact in which partner countries grant each other reduced tariffs on an agreed list of goods, without the comprehensive liberalization of a free trade agreement. It is the shallowest form of economic integration and often a stepping stone to deeper deals. India has signed PTAs with partners such as Mercosur. It matters for UPSC because GS-3 and current-affairs questions test the hierarchy of trade blocs from PTA to customs union.

Example: India-Mercosur Preferential Trade Agreement

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Prejudice

Prejudice is a pre-judgment, an attitude of favour or disfavour toward a person or group formed without adequate evidence or experience. In the GS-4 ethics syllabus it is distinguished from stereotype (a cognitive belief) and discrimination (the behavioural act). Prejudice can be positive or negative and often operates unconsciously. It matters for UPSC because attitude, its formation and its role in administration are core topics of the ethics paper.

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PRELUDE

A technology-demonstration mission by the European Space Agency with the company ClearSpace, announced in 2026, to test the autonomous rendezvous and proximity operations needed for in-orbit servicing and active space debris removal. Two small spacecraft will fly in formation and perform complex close-approach manoeuvres, with launch targeted for 2027, paving the way for satellite life extension, repair and debris removal as routine services. It is part of ESA's Space Safety Programme.

Example: PRELUDE's vision-based navigation trials will feed into ClearSpace-1, ESA's mission to capture and deorbit a defunct rocket adapter.

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Prem Behari Narain Raizada

Prem Behari Narain Raizada is the calligrapher who hand-wrote the original Constitution of India in a flowing italic style, completing 395 articles, 8 schedules and the Preamble over six months in Constitution Hall. Asked his fee, he charged nothing and requested only that his name appear on every page, a wish that was honoured. The Hindi version was written by Vasant Krishan Vaidya. He matters for UPSC because the making of the Constitution is a favourite prelims topic.

Example: Constitution adopted on 26 November 1949

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Premature deindustrialisation

Premature deindustrialisation, Dani Rodrik's term, is the shift of developing economies toward services before industry has absorbed the workforce, leaving manufacturing's share peaking at low income levels. India is the classic case. It is the essay's structural worry behind the jobs crisis.

Example: Deindustrialising before getting rich, Rodrik's diagnosis of India's structure.

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Premium / contribution

Premium / contribution is the payment made to secure insurance or social-security coverage: a premium is the amount a policyholder pays an insurer for a policy, while a contribution is the shared payment by employer and employee into schemes like the Employees' State Insurance. The terms anchor questions on crop insurance, Ayushman Bharat and labour welfare. It matters for UPSC because GS-3 welfare-scheme questions turn on who pays, how much and what risk is covered.

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preparation

Preparation is the systematic work done before an event to ensure readiness, whether for an examination, a disaster, or a policy launch. In UPSC discourse it usually means structured study and revision for the civil services examination, but in governance it covers contingency planning and capacity building. It supports GS-4 answers on diligence and work culture, though as a term it carries no fixed technical definition.

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Preparedness

Preparedness is the state of readiness to respond to a disaster: plans, training, drills, early warning systems, stockpiles and institutional coordination put in place before the event. It determines how fast and effectively response begins.

Example: the annual pre-monsoon mock drills conducted by DDMAs across flood-prone districts are preparedness

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Prescription

In GS-4 ethics, a prescription is a normative statement about what ought to be done, as opposed to a description of what is the case. Ethics is essentially prescriptive: it lays down standards of right conduct, duties, and values to guide human choices rather than merely recording facts. The distinction matters for mains answers on the nature of ethics and for quote-based questions, where candidates must move from a value to the action it demands.

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preserved the federation

'Preserved the federation' describes the judiciary's role in safeguarding India's federal structure against executive overreach. The landmark moment came when the Supreme Court curtailed the Centre's power to dismiss state governments under Article 356, ruling that such proclamations are subject to judicial review and that the floor of the House is the true test of majority. It anchors GS-2 (polity) answers on federalism and judicial review.

Example: S.R. Bommai v. Union of India (1994).

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presidency

A presidency was one of the three great administrative divisions of British India, Bengal, Madras, and Bombay, each governed by a Governor reporting ultimately to the Governor-General. Originating as East India Company trading settlements, they became the backbone of British territorial rule and housed the presidency armies, courts, and universities. Presidencies are key to GS-1 (modern history) on colonial administration.

Example: The Bengal Presidency, whose Governor became Governor-General of India under the Regulating Act of 1773.

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presidency armies of Bengal, Madras and Bombay

The presidency armies of Bengal, Madras, and Bombay were the three separate military forces maintained by the East India Company under each presidency government. Raised largely from Indian sepoys under British officers, they fought the Company's wars of expansion and were reorganised after the Revolt of 1857. Their eventual merger into a single Indian Army is important for GS-1 (modern history).

Example: The amalgamation of the three presidency armies in 1895 under a single Commander-in-Chief.

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President

The President is the head of state of India and the formal head of the executive under Article 52, elected indirectly for a five-year term by an electoral college of MPs and MLAs. The office carries powers over legislation, ordinances under Article 123, pardons under Article 72, and emergencies, exercised on the aid and advice of the Council of Ministers. It matters for prelims (election, impeachment under Article 61) and mains debates on discretionary powers.

Example: Droupadi Murmu, elected in 2022 as India's first tribal President

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President's pleasure

The President's pleasure is the doctrine under Article 310 that civil servants hold office during the pleasure of the President or Governor, meaning they lack the contractual security of private employment. It is balanced by Article 311, which bars dismissal by an authority subordinate to the appointing authority and guarantees a reasonable opportunity of being heard. For UPSC, it frames the tension between executive control and service security.

Example: In Samsher Singh (1974) the Supreme Court held that this pleasure is exercised on ministerial advice.

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President's Rule

President's Rule is direct Union administration of a state under Article 356, imposed when the President is satisfied that the state's government cannot function in accordance with the Constitution. The assembly is suspended or dissolved, the Governor administers the state on the President's behalf, and Parliament legislates for it. It requires parliamentary approval every six months, up to a maximum of three years, and the Bommai judgment (1994) made its imposition judicially reviewable.

Example: Manipur was placed under President's Rule in February 2025 after the Chief Minister's resignation.

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President's Rule (Article 356)

President's Rule is the emergency provision under Article 356 of the Constitution, under which the President assumes a state's administration when its government cannot be carried on in accordance with the Constitution, on the Governor's report or otherwise. It requires parliamentary approval within two months and is capped at three years. For UPSC the key safeguards are the 44th Amendment limits and the S.R. Bommai (1994) judgment curbing its misuse.

Example: The Supreme Court's S.R. Bommai v. Union of India (1994) ruling made the floor test, not the Governor's opinion, the test of a government's majority, restraining Article 356 misuse.

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Presidential Elections Act, 1952

The Presidential Elections Act, 1952 is formally the Presidential and Vice-Presidential Elections Act, 1952, the statute governing elections to India's two highest constitutional offices. It lays down nomination, scrutiny, polling, counting and dispute-resolution procedures, with election petitions heard directly by the Supreme Court. It operationalises Articles 54 to 56 for the presidency.

Example: Droupadi Murmu's election as President in 2022 was conducted under this Act's framework.

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Presidential Ordinance

A Presidential Ordinance is a law promulgated by the President under Article 123 when Parliament is not in session and immediate action is required. It has the force of an Act but lapses six weeks after Parliament reassembles unless approved, and the Supreme Court in R.C. Cooper and D.C. Wadhwa barred re-promulgation as a fraud on the Constitution. It is a prelims staple (Article 123) and a mains theme in debates on bypassing legislative scrutiny.

Example: D.C. Wadhwa v. State of Bihar (1987), which struck down the re-promulgation of ordinances

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press

The press is the collective institution of newspapers and news media, treated in Indian constitutional law as a pillar of democracy protected by the freedom of speech and expression under Article 19(1)(a). Though the Constitution names no separate press freedom, courts have held that censorship and unreasonable restrictions violate this right. It is central to GS-2 (polity) on fundamental rights and media accountability.

Example: Indian Express Newspapers v. Union of India (1985), affirming press freedom as part of Article 19(1)(a).

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Press Act of 1835

The Press Act of 1835 is the law by which Governor-General Charles Metcalfe repealed the restrictive press regulations of 1823, freeing Indian newspapers from prior licensing and censorship. It earned Metcalfe the title of Liberator of the Indian Press and marks the high point of press freedom before later curbs such as the Vernacular Press Act of 1878. It is a classic prelims fact in the history of press legislation.

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Press and culture

The press served as a vehicle of cultural awakening in colonial India, with newspapers in Indian languages spreading reformist ideas, literature, and nationalist thought to a wider public. Titles such as Kesari, The Hindu, and Amrita Bazar Patrika shaped opinion, debated social reform, and built a shared political vocabulary. The theme is central to GS-1 mains answers on the press and the freedom movement.

Example: Bal Gangadhar Tilak's Marathi weekly Kesari, founded in 1881

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Press censorship

Press censorship is state control over what newspapers may print, exercised in colonial India through licensing laws and measures like the Vernacular Press Act of 1878, which let magistrates demand securities and seize presses. It is a GS-1 and GS-2 staple: prelims asks about specific press laws, while mains links censorship to freedom of speech under Article 19(1)(a) and its reasonable restrictions. The colonial experience shaped independent India's press-freedom jurisprudence.

Example: The Vernacular Press Act, 1878

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Press Council of India (1979)

The Press Council of India, re-established in 1979 under the Press Council Act, 1978, is the statutory watchdog for print-media ethics and press freedom. It can censure but not punish. It matters as the self-regulatory ideal for the press, distinct from government control.

Example: The Council's adjudications on paid news complaints

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Pressure belts and planetary winds

Pressure belts are the seven latitudinal zones of high and low atmospheric pressure: the equatorial low, two subtropical highs, two subpolar lows, and two polar highs. Planetary winds are the permanent winds blowing between them, the trade winds, westerlies, and polar easterlies, deflected by the Coriolis force. Together they drive global climate, ocean currents, and the monsoon, making them core prelims physical geography.

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Pressure from superiors

In GS-4 ethics, pressure from superiors is the push by higher authority on a civil servant to take decisions that bend rules or conscience, creating an ethical dilemma between obedience and integrity. The expected response is loyalty to the Constitution and the law over personal loyalty, guided by conduct rules and the courage to record dissent. Mains case studies regularly test this conflict between hierarchy and conscience.

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Pressurised Heavy Water Reactor (PHWR)

A Pressurised Heavy Water Reactor is a nuclear reactor that uses natural (unenriched) uranium as fuel and heavy water, deuterium oxide, as both moderator and coolant, with the coolant kept under pressure to prevent boiling. Because heavy water absorbs few neutrons, the reactor can run on natural uranium, and India has built its nuclear fleet around this design.

Example: Kakrapar Atomic Power Station's 700 MWe units are India's largest indigenously designed PHWRs, alongside the standard 220 MWe units.

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Pressurised Water Reactor (PWR)

A Pressurised Water Reactor is a nuclear reactor that uses enriched uranium fuel and ordinary (light) water as both moderator and coolant, held at high pressure so it does not boil in the core. Heat is transferred to a separate secondary loop that makes steam for the turbines, keeping radioactive water away from the power-generating circuit, and PWRs are the world's most common reactor type.

Example: The Kudankulam Nuclear Power Plant's VVER-1000 units are Russian-designed PWRs.

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presumptive titling

Presumptive titling is India's current land-title system where records presume ownership but the state does not guarantee it, leaving titles open to challenge. Registration records transactions without certifying title, unlike conclusive systems. For UPSC it is the weakness that conclusive-titling pilots aim to fix.

Example: A buyer discovering a competing claim on registered land faces the limits of presumptive titling.

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Prevention

Prevention is action taken to avoid a disaster entirely by eliminating the hazard or the exposure, such as banning construction on landslide-prone slopes or phasing out hazardous industrial processes. It is the most ambitious aim of disaster management, though not all hazards can be prevented.

Example: vaccinating a population to prevent an epidemic is prevention

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Prevention of Corruption (Amendment) Act, 2018

The Prevention of Corruption (Amendment) Act, 2018 overhauled the 1988 anti-graft law. It criminalised bribe-giving for the first time, introduced corporate liability for bribing public servants, required prior approval under Section 17A before probing officials for decisions taken in official capacity, and mandated time-bound trials. It narrowed the earlier, broader offence of criminal misconduct into clearer bribery offences.

Example: Section 17A approvals are now routinely sought in CBI probes of serving officers.

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Prevention of Corruption Act

The Prevention of Corruption Act, 1988 is India's principal anti-graft statute, consolidating laws against bribery by public servants. It defines offences like taking gratification, criminal misconduct and possession of disproportionate assets, and requires prior sanction under Section 19 before prosecuting officials. The CBI and state anti-corruption bureaus investigate under it.

Example: Disproportionate-asset cases against public servants are filed under this Act.

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Prevention of Money Laundering Act (PMLA), 2002

The Prevention of Money Laundering Act, 2002 is India's core anti-money-laundering statute, criminalising the laundering of proceeds of scheduled offences. It empowers the Enforcement Directorate to attach, search, seize and arrest. The Supreme Court upheld its wide powers in the 2022 Vijay Madanlal judgment. It matters as the backbone of India's financial-crime enforcement.

Example: ED attachments of laundered assets under PMLA

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Prevention of Money Laundering Act, 2002

The Prevention of Money Laundering Act, 2002 (PMLA) criminalises money laundering and empowers the Enforcement Directorate to attach and confiscate tainted property. Enacted in 2002 and enforced from July 2005, it obliges banks and financial intermediaries to report suspicious transactions, and later amendments widened its reach. It anchors India's financial-integrity regime.

Example: The ED routinely attaches properties of accused persons during laundering investigations.

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Prevention of Terrorism Bill

The Prevention of Terrorism Bill was the NDA government's 2001 anti-terror legislation to replace the Prevention of Terrorism Ordinance. Rejected by the Rajya Sabha on March 21, 2002, it was passed in a rare joint sitting of Parliament on March 26, 2002, by 425 votes to 296, and became the Prevention of Terrorism Act (POTA), which lapsed in 2004 amid misuse concerns.

Example: Its passage marked only the third joint sitting in Parliament's history.

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preventive detention

Preventive detention is detention without charge or trial to stop a person from committing an anticipated offence, as distinct from punitive detention after conviction. Article 22 permits it but requires the grounds to be communicated and provides for advisory-board review, with Parliament fixing the maximum period by law. It is an extraordinary power meant for threats to security and public order. Example: detentions ordered under the National Security Act, 1980.

Example: Detention orders issued under the National Security Act, 1980, to prevent threats to national security and public order.

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PRI

Panchayati Raj Institutions are the constitutionally mandated rural local governments created by the 73rd Constitutional Amendment, 1992, under Part IX. Organised in three tiers of village, intermediate, and district levels, they receive devolved powers over 29 subjects in the Eleventh Schedule and reserve seats for SCs, STs, and women. They matter for UPSC as the foundation of democratic decentralisation.

Example: A gram panchayat preparing its annual Gram Panchayat Development Plan.

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Price Deficiency Payment (PDP) scheme

A Price Deficiency Payment scheme pays farmers the difference between the MSP and the actual market price, without the government procuring the crop. It protects incomes while avoiding the fiscal and storage burden of physical procurement. For UPSC it is the market-friendly alternative to procurement-led price support, pioneered by Madhya Pradesh's Bhavantar.

Example: A soybean farmer selling below MSP receives the gap as a direct payment under a PDP design, instead of waiting for agency procurement.

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Price Deficiency Payment Scheme (PDPS)

PDPS is the PM-AASHA component (2018) that pays farmers the difference between MSP and the actual sale or modal mandi price directly into their bank accounts, without any physical procurement by the government. It covers notified oilseeds and aims to protect farm incomes when markets crash. For UPSC it matters as the cash-transfer alternative to physical procurement, modelled on Madhya Pradesh's Bhavantar Bhugtan Yojana.

Example: Madhya Pradesh piloted the Bhavantar Bhugtan Yojana for soybean in 2017, the prototype on which the national PDPS design was based.

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price incentives

Price incentives are deliberate price signals, such as minimum support prices, subsidies, or procurement guarantees, used by the state to steer production toward desired crops or goods. In Indian agriculture they assure farmers of remunerative returns and reduce market risk, shaping cropping patterns and food security. They are essential for GS-3 (economy and agriculture) answers on farm policy.

Example: The minimum support prices recommended by the Commission for Agricultural Costs and Prices (CACP) for major crops.

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price rise and administrative corruption

Price rise and administrative corruption describes the link between inflation and corrupt behaviour in public administration, where rising living costs push underpaid officials toward bribe-taking and rent-seeking. Ethics literature treats runaway prices as an environmental driver of corruption alongside weak oversight and low salaries. It is relevant for GS-4 (ethics) discussions on the causes of corruption in governance.

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Price Support Scheme (PSS)

The Price Support Scheme is the PM-AASHA component under which central agencies like NAFED physically procure notified oilseeds, pulses and copra at MSP when market prices fall below it, on the request of state governments. The Centre bears procurement expenditure and losses up to 25 percent of production. For UPSC it is the traditional pillar of MSP assurance for crops outside the wheat-paddy system.

Example: NAFED's procurement of tur and urad at MSP in years of bumper harvests is the standard illustration of PSS operations.

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price-stabilisation scheme for TOP crops: tomato, onion and potato

This is Operation Greens, the central sector scheme announced in the 2018-19 Budget for the integrated development of the tomato, onion and potato value chain. Run by the Food Processing Industries Ministry with a Rs 500 crore outlay, it combines short-term price stabilisation with FPOs, agri-logistics and storage. For UPSC GS-3 it is the model answer on perishable-price volatility.

Example: it was extended from TOP to all fruits and vegetables (TOP to TOTAL) in June 2020

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Priest King

The Priest King is the small steatite bust excavated at Mohenjo-daro, dated to around 2200-1900 BCE, showing a bearded man with a trefoil-patterned shawl and half-closed eyes. Its refined carving exemplifies Harappan stone craftsmanship. It matters for UPSC as an iconic Indus Valley artefact used in prelims to test knowledge of Harappan art, and debates about its identity illustrate how little is certain about Harappan political life.

Example: the steatite bust excavated at Mohenjo-daro

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prima facie duties

Prima facie duties are the self-evident moral obligations identified by philosopher W.D. Ross, such as fidelity, reparation, gratitude, justice, beneficence, self-improvement, and non-maleficence. Each binds at first sight, but actual duty in a concrete case is decided by weighing them against one another. Ross's pluralism is a standard GS-4 (ethics) alternative to single-rule theories like utilitarianism and Kantianism.

Example: W.D. Ross's The Right and the Good (1930), which sets out the theory.

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Primary Agricultural Credit Societies (PACS)

Primary Agricultural Credit Societies are village-level cooperative institutions forming the base tier of India's three-tier short-term cooperative credit structure; above them sit district central cooperative banks and state cooperative banks. They give farmers crop loans, input supply, and marketing support at the grassroots. They matter for GS-3 (agricultural credit, financial inclusion) and prelims questions on the cooperative credit pyramid.

Example: The central scheme approved in 2022 to computerize PACS across the country

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primary consumers

Primary consumers are the herbivores that feed directly on producers (green plants) in a food chain, forming the second trophic level. They convert plant biomass into animal biomass and are the main food source for secondary consumers. Energy transfer at this step is inefficient, with only about 10 per cent of energy passing up to each successive trophic level.

Example: Grasshoppers feeding on grass in a grassland ecosystem, in turn eaten by frogs and other secondary consumers.

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Primary deficit

Primary deficit is the fiscal deficit minus interest payments on past borrowings, revealing the current year's fresh borrowing need apart from the legacy debt burden. The identity fiscal deficit equals primary deficit plus interest payments is a favourite prelims formula, and budget analyses track whether the primary deficit is falling as a sign of fiscal consolidation. It appears in every Union Budget's fiscal indicators.

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Primary emotions

Primary emotions are the basic, universal emotions present from birth, commonly listed as happiness, sadness, fear, anger, surprise, and disgust following psychologist Paul Ekman's research. They trigger fast, automatic bodily responses, unlike secondary emotions such as guilt, shame, or pride, which are shaped by social learning. The distinction supports the GS-4 emotional intelligence section on recognising and managing emotions.

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primary health centres

Primary health centres are the first point of contact between India's rural population and the formal health system, providing preventive, promotive, and basic curative care, maternal and child services, and immunisation. Staffed by a medical officer and paramedical workers, each PHC serves a cluster of villages under a community health centre's referral chain. They are central to GS-2 (social justice) on public health infrastructure.

Example: The Bhore Committee (1946), whose report blueprinted PHCs for independent India.

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primary market

The primary market is the segment of the capital market where companies raise fresh funds by issuing new securities, such as shares and bonds, directly to investors. Unlike the secondary market, where existing shares change hands, primary-market offerings like IPOs bring new capital into firms for expansion. Regulated by SEBI, it is a GS-3 (economy) topic on financial markets.

Example: The Life Insurance Corporation of India's 2022 initial public offering, then the country's largest.

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Primary orientation

In UPSC ethics and governance answers, a person's primary orientation is the foundational direction of their conduct: for a civil servant it means placing service to the nation and citizens above self-interest, political convenience, or careerism. It underpins values like dedication to public service and integrity, and mains answers invoke it when discussing attitude, work culture, and the purpose of the civil services.

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Primary pollutant

A primary pollutant is a harmful substance emitted directly from an identifiable source, such as sulphur dioxide from coal or carbon monoxide from vehicles. Control means acting at that source.

Example: Particulate matter from a factory stack before it reacts in the air.

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primary productivity

Primary productivity is the rate at which producers, mainly green plants and algae, convert solar energy into chemical energy through photosynthesis over a given time and area. Gross primary productivity is the total energy fixed, while net primary productivity is what remains after the plants' own respiration is subtracted. It sets the energy budget available to every other trophic level in the ecosystem.

Example: Tropical rainforests have among the highest net primary productivity on land, while deserts and the open ocean have very low values.

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primary schools

Primary schools are institutions providing the first stage of formal education, typically classes 1 to 5, where children acquire foundational literacy, numeracy, and social skills. In India universal access to this stage is a constitutional goal backed by the Right to Education Act, which made free and compulsory schooling a right for children aged 6 to 14. They feature in GS-2 (social justice) on education policy.

Example: The Right of Children to Free and Compulsory Education Act, 2009.

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primary sector

The primary sector is the part of the economy that extracts or harvests natural resources directly, including agriculture, forestry, fishing, and mining. It supplies raw materials to the secondary (manufacturing) sector and services to the tertiary sector, and historically dominates employment in developing economies. Sectoral shares and structural transformation are recurring GS-3 (economy) themes.

Example: Agriculture, which still provides the largest share of employment in India's workforce.

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primary sources

Primary sources are original, first-hand materials from the period under study, such as inscriptions, coins, official records, eyewitness accounts, and archaeological remains. Historians privilege them over secondary interpretations because they are closest to the events, though they still require critical evaluation for bias. Source criticism is a basic GS-1 (history) skill for evaluating evidence.

Example: The rock and pillar edicts of Ashoka as primary evidence for Mauryan administration.

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Primary succession

Primary succession is the process of ecological change that begins on a lifeless surface where no soil exists, such as bare rock, cooled lava, or land newly exposed by a retreating glacier. Pioneer species like lichens and mosses colonize first, and their growth and decay gradually build soil, allowing grasses, then shrubs, and finally a stable climax community to take hold. It is slower than secondary succession because soil must be created from scratch.

Example: Vegetation colonizing the bare volcanic island of Surtsey, Iceland, formed by eruptions in the 1960s

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Primary tool

In UPSC usage, a primary tool is the main instrument relied upon to achieve an objective; for example, the Constitution is described as the primary tool of democratic governance, and answer writing as the primary tool of mains preparation. The phrase signals hierarchy among means: one dominant instrument supported by secondary ones. It appears across GS papers whenever answers compare methods of achieving a policy or administrative goal.

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Prime Minister

The Prime Minister is India's head of government under Articles 74 and 75, appointed by the President and required to command the Lok Sabha's confidence. The PM advises the President, allocates portfolios, chairs the Cabinet and is the chief link between the President and the Council of Ministers. The office concentrates real executive authority in India's parliamentary system.

Example: Narendra Modi has held the office since May 2014.

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Prime Minister Manmohan Singh

Manmohan Singh was India's Prime Minister from 2004 to 2014 and, as Finance Minister in 1991, the architect of the liberalisation, privatisation, and globalisation reforms that opened the Indian economy. An economist, former RBI Governor, and Finance Secretary, his UPA tenure saw rights-based laws like MGNREGA and the RTI Act. He passed away in December 2024, and his legacy is central to GS-3 answers on economic reforms.

Example: The 1991 New Economic Policy, announced when he was Finance Minister

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Prime Minister's New 15-Point Programme

The Prime Minister's New 15-Point Programme, launched in 2006, is a welfare programme for religious minorities with fifteen measures spanning education, employment, credit, and access to government schemes. It provides for earmarking 15 per cent of outlays and targets in relevant schemes for minorities and is monitored by the Ministry of Minority Affairs. It is a GS-2 prelims fact on minority welfare architecture.

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Primitive subsistence farming

Primitive subsistence farming is cultivation on small patches using simple tools, family labour, and no modern inputs, producing barely enough for the farmer's household. It includes shifting cultivation, known as jhum in the Northeast, podu, and bewar, where forest land is cleared, cropped briefly, and left fallow. It is a classic prelims geography topic contrasting subsistence with intensive and commercial farming.

Example: Jhum cultivation in the northeastern states

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Primitive Tribal Groups

Primitive Tribal Groups was the official category for India's most backward tribal communities, identified on the Dhebar Commission's criteria of pre-agricultural technology, stagnant population, low literacy and subsistence economy. The label was replaced in 2006 by Particularly Vulnerable Tribal Groups (PVTGs), now numbering 75 across 18 states and Union Territories.

Example: The Sentinelese of the Andaman Islands are a Particularly Vulnerable Tribal Group.

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Prince of Wales in November 1921

The Prince of Wales's visit to India in November 1921 (the future Edward VIII) was met with a nationwide boycott called by the Non-Cooperation Movement, with hartals and protests greeting his landing in Bombay on 17 November. The boycott showcased mass nationalist mobilisation against British ceremonial authority. It is a standard prelims fact linking the royal visit to the 1921-22 phase of the freedom struggle.

Example: The hartal in Bombay on 17 November 1921, the day he landed

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Principal Bench

The Principal Bench is the main seat of a tribunal, where its chairperson or senior-most member presides and the most significant cases are heard. Tribunals with regional benches route important or precedent-setting matters to it, giving it a coordinating role over zonal benches across the country.

Example: The National Green Tribunal's Principal Bench sits in New Delhi, with zonal benches at Bhopal, Pune, Kolkata and Chennai.

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Principal Scientific Adviser

The Principal Scientific Adviser is the Government of India's chief adviser on science and technology policy, an office created in 1999. The PSA advises the Prime Minister and Cabinet, coordinates scientific missions across ministries and steers national technology initiatives. It institutionalises scientific input at the highest level of policymaking.

Example: A.P.J. Abdul Kalam served as the first Principal Scientific Adviser from 1999 to 2001.

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Principle

A principle is a fundamental rule, belief, or proposition that guides thought and conduct, such as the constitutional principles of justice, liberty, equality, and fraternity set out in the Preamble, or ethical principles like integrity and impartiality in GS-4. UPSC answers gain weight by anchoring abstract principles in specific Articles, cases, and examples rather than invoking them vaguely. It is among the most-used terms across all GS papers.

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principled distance

Principled distance is political theorist Rajeev Bhargava's description of Indian secularism, in which the state keeps a principled, not absolute, distance from all religions. The state may intervene in religious affairs to uphold liberty and equality, as in temple-entry or personal-law reforms, while otherwise treating all faiths even-handedly. It is the standard GS-2 (polity) framework contrasting Indian and Western secularism.

Example: Rajeev Bhargava's writings on Indian secular democracy.

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printing press

A printing press is a machine that transfers inked text and images from movable type or plates onto paper, making mass production of books and newspapers possible. Invented in Europe by Gutenberg in the fifteenth century, it ended the manuscript age and powered the Reformation, the Enlightenment, and modern nationalism. It is vital for GS-1 (modern history) on print culture and the freedom of the press.

Example: Gutenberg's movable-type press at Mainz around 1440, and the Jesuit press set up at Goa in 1556, India's first.

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Printing press

The printing press is Gutenberg's movable-type press of around 1440, which cut the cost of books dramatically and standardised texts. It spread Renaissance learning, armed the Reformation with pamphlets and made the Scientific Revolution cumulative.

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Prior approval (Section 17A)

Section 17A of the Prevention of Corruption Act, inserted by the 2018 amendment, requires prior approval of the competent authority before police may inquire into or investigate a public servant's decisions taken in discharge of official duty. It seeks to protect bona fide administrative decisions from harassment while keeping genuine corruption cases prosecutable. It is a GS-2 governance point on balancing accountability with fearless decision-making.

Example: The Prevention of Corruption (Amendment) Act, 2018

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Priority Sector Lending

Priority Sector Lending is the RBI mandate requiring banks to direct a share of credit to agriculture, MSMEs, education and housing, including food processing under agri-allied categories. It ensures institutional credit reaches sectors markets might underserve. For UPSC it is the financial-inclusion mechanism behind farm and rural credit.

Example: A food-processing unit's subsidised bank loan under priority-sector norms shows the mandate's reach.

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Priority Sector Lending (PSL)

Priority Sector Lending is the RBI mandate requiring banks to channel a specified share of credit to designated priority sectors: 40 per cent of adjusted net bank credit for domestic scheduled commercial banks. It covers agriculture, MSMEs, export credit, education, housing, social infrastructure, renewable energy, and weaker sections, with sub-targets such as 18 per cent for agriculture. It is a perennial GS-3 prelims topic on financial inclusion.

Example: The 18 per cent sub-target for agriculture within PSL

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Priority Watch List

The Priority Watch List is a category in the United States Trade Representative's annual Special 301 Report, which reviews how trading partners protect and enforce intellectual property rights. Countries placed on it are judged to have serious problems with IP protection, enforcement, or market access for IP-dependent goods and services. India has remained on the Priority Watch List since the 1990s, and was retained in the 2026 report alongside China, Russia, Indonesia, Chile, and Venezuela.

Example: The USTR Special 301 Report 2026 retaining India on the Priority Watch List over pharmaceutical patent and piracy concerns

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priority-sector lending

Priority-sector lending is the Reserve Bank of India's mandate requiring banks to direct a fixed share of their credit to sectors deemed nationally important but underserved by markets, such as agriculture, micro and small enterprises, education, housing, and weaker sections. It blends social banking with commercial banking and is a recurring GS-3 (economy) topic on financial inclusion.

Example: The RBI norm that banks must extend 40 percent of adjusted net bank credit to priority sectors.

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PRISM

PRISM (Promoting Innovations in Individuals, Startups and MSMEs) is a Ministry of MSME scheme launched in 2015 to fund proof-of-concept and technology development by individual innovators, startups and small enterprises. It supports projects through grants routed via implementing agencies and incubation support. For UPSC it matters as part of the innovation ecosystem alongside Startup India and the Atal Innovation Mission, targeting grassroots and small-firm innovators.

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Prisons Act

The Prisons Act, 1894 is the colonial-era statute governing prison administration in India, covering the duties of jail officers, classification of prisoners, discipline and inspections. Prisons fall under the State List, so states frame their own jail manuals under it, and its archaic provisions are a staple of prison-reform debates.

Example: The Home Ministry's Model Prisons and Correctional Services Act, 2023 was drafted to replace it.

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Prithvi

Prithvi is India's indigenous short-range surface-to-surface ballistic missile, developed by the DRDO under the Integrated Guided Missile Development Programme. Its variants, Prithvi-I, II, and III, have ranges of roughly 150 to 350 km and can carry conventional or nuclear warheads. First tested in 1988, it gave India an early strategic deterrent and remains a standard prelims defence fact.

Example: The first test flight in February 1988 from Sriharikota

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Prithvi Sukta

The Prithvi Sukta, also called the Bhumi Sukta, is a hymn to Mother Earth in the twelfth book of the Atharva Veda, comprising 63 verses that praise the earth as the sustainer and nourisher of all life. Its famous line declares the earth to be the speaker's mother and the speaker her child. It is cited in UPSC answers on ancient Indian environmental ethics and in essays linking traditional thought to sustainable development.

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Prithviraj Chauhan

Prithviraj Chauhan, who ruled circa 1166 to 1192, was the Chahamana ruler of Ajmer and Delhi who defeated Muhammad Ghori at the First Battle of Tarain in 1191 but lost the Second Battle of Tarain in 1192. His defeat opened north India to Turkish rule and the Delhi Sultanate. He is a fixture of prelims medieval history and of questions on Rajput resistance.

Example: The Second Battle of Tarain, 1192

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Pritilata Waddedar

Pritilata Waddedar (1911-1932) was a Bengali revolutionary and member of Surya Sen's group in Chittagong. In September 1932 she led an attack on the Pahartali European Club, which displayed a sign barring Indians, and died after consuming cyanide to avoid capture. She matters for UPSC as one of the first women martyrs of the armed nationalist struggle, illustrating women's central role in revolutionary terrorism.

Example: Her leadership of the Pahartali raid is the standard example of women's participation in the Chittagong revolutionary movement.

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Privacy and surveillance

Privacy and surveillance refers to the tension between an individual's right to privacy, recognized as a fundamental right under Article 21 in Justice K.S. Puttaswamy v. Union of India (2017), and the growing capacity of states and companies to watch populations. Artificial intelligence intensifies the surveillance side by enabling tracking of movement, behavior, and identity at population scale, raising risks of profiling, data misuse, and chilling effects on free expression. UPSC-relevant debates center on balancing national security and public safety with proportionality, oversight, and data protection law.

Example: Large-scale CCTV and facial-recognition networks that can track individuals' movement across a city in real time

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Privacy invasion

Privacy invasion is the unauthorised intrusion into a person's private life, personal data, or communications by the state or private actors. In India it connects to the Supreme Court's Puttaswamy judgment of 2017, which recognised privacy as a fundamental right under Article 21, and to the data protection regime under the DPDP Act, 2023. It is relevant for GS-2 on rights and for GS-4 on integrity in handling citizen data.

Example: Justice K.S. Puttaswamy (Retd.) v. Union of India (2017)

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Private Entrepreneurs Guarantee (PEG) scheme

The Private Entrepreneurs Guarantee scheme invites private investors to build FCI-hired godowns with a ten-year guaranteed hiring by the Food Corporation of India. The assured occupancy de-risks private investment in storage where FCI operates. For UPSC it is the PPP model for closing the covered-storage gap.

Example: A private warehouse built under PEG in Haryana is hired by FCI for a decade, guaranteeing the investor returns.

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private property

Private property is the legal right of individuals to own, use and transfer assets such as land, housing and capital, subject to reasonable state regulation. In India it ceased to be a Fundamental Right with the 44th Amendment of 1978 and survives as a constitutional legal right under Article 300A. For UPSC it matters in debates on land acquisition, eminent domain and economic freedom.

Example: The 44th Amendment deleted Articles 19(1)(f) and 31 and inserted Article 300A, making property a legal rather than fundamental right.

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Private sector banks

Private sector banks are banks in which private investors hold the majority stake, licensed by the RBI alongside public sector banks. Modern private banking began with the 1993 licensing round after liberalisation, followed by further licences and the 2016 on-tap universal bank policy. For UPSC they matter in debates on efficiency, financial inclusion, privatisation of public banks and the RBI's differentiated licensing (small finance banks, payments banks).

Example: HDFC Bank and ICICI Bank, both licensed in the post-1993 wave, are cited in comparisons of private versus public sector bank performance.

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Private work culture

In UPSC governance answers, private work culture denotes the norms of private-sector workplaces, often contrasted with bureaucratic culture: measurable performance, accountability for outcomes, customer focus, and faster decision-making versus hierarchy and procedure. Mains answers invoke it when discussing administrative reforms, lateral entry, and mission-mode delivery such as Mission Karmayogi. The comparison must stay balanced, noting public-sector strengths like equity and due process.

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privatisation

Privatisation is the transfer of ownership or management of state-owned enterprises to private hands, ranging from minority disinvestment to strategic sale with a change of control. In India it accelerated after the 1991 reforms and is pursued through strategic disinvestment handled by the Department of Investment and Public Asset Management. For UPSC, privatisation anchors debates on the state's economic role, efficiency and fiscal consolidation.

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Privatisation

Privatisation is the transfer of ownership or management of public-sector enterprises to private hands, through disinvestment, strategic sale, or public offers, and was a pillar of the 1991 LPG reforms. It aims at efficiency, competition, and fiscal relief, but raises concerns over jobs, regional balance, and welfare. It is a GS-3 mains staple in debates on the role of the state versus the market.

Example: The strategic sale of Air India to the Tata Group, completed in January 2022

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privy purses

Privy purses were the tax-free annual payments and privileges guaranteed to former rulers of princely states as part of their instruments of accession to independent India. They were abolished by the 26th Constitutional Amendment in 1971 after an earlier executive order of derecognition was struck down by the Supreme Court. For UPSC they illustrate the tension between accession promises and egalitarian constitutionalism.

Example: The 26th Amendment (1971) ended privy purses, completing the political integration of the princely order.

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Priyadarshika

Priyadarshika is a Sanskrit natika, a one-act romantic play, attributed to King Harshavardhana of Kannauj, who ruled in the seventh century CE. It is one of three plays ascribed to him, alongside Ratnavali and Nagananda, and dramatises King Udayana's love for Princess Priyadarshika. It is a prelims fact on Harsha's court and classical Sanskrit literature.

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prizes improvisation

'Prizes improvisation' points to the use of prize competitions and awards to stimulate improvisation and innovation, especially in governance and development. By offering recognition or funding for the best solution to a stated problem, states and organisations crowdsource creativity beyond their own bureaucracies. It fits GS-2 and GS-4 answers on innovation in administration and incentive design.

Example: The Smart India Hackathon, held since 2017, where student teams build working prototypes for ministry-posed problems.

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pro-cyclical

Pro-cyclical describes policies or flows that amplify the business cycle instead of stabilising it, such as governments spending more during booms and cutting back during recessions. Fiscal policy is ideally counter-cyclical, saving in good times and stimulating in bad ones, but political incentives often make it pro-cyclical. The distinction is a GS-3 (economy) staple in questions on fiscal management.

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Pro-Planet People (P3)

Pro-Planet People, abbreviated P3, is the term used for individuals who adopt environment-friendly lifestyles in line with LiFE (Lifestyle for Environment), the India-led global movement for mindful consumption. Such people cut emissions and waste through daily choices like using public transport, reducing e-waste, conserving water, and avoiding single-use plastics. The UN Environment Programme estimates that if one billion of the world's eight billion people adopt environment-friendly behavior, global carbon emissions could fall by about 20 percent.

Example: A household that repairs electronics instead of discarding them, composts kitchen waste, and commutes by metro rather than private car

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problem of national minorities

The problem of national minorities was the challenge faced by the Indian national movement in securing the trust of religious and other minorities while building a united anti-colonial front. British policies of separate electorates deepened the divide, culminating in demands for partition. Handling this question shaped constitutional safeguards like fundamental rights and minority protections. It is examined in GS-1 (modern history).

Example: The Communal Award of 1932, which extended separate electorates and triggered Gandhi's fast and the Poona Pact.

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Problem-solving aptitude

Problem-solving aptitude is the ability to analyse a situation, weigh options, and arrive at a workable solution under constraints, listed in the GS-4 syllabus under aptitude and foundational values for the civil services. Mains case studies test it directly, rewarding structured reasoning, stakeholder awareness, and citizen-centric outcomes over textbook answers. It links aptitude to integrity: finding the right means, not just the end.

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procedure

Procedure is the prescribed sequence of steps through which law is made, enforced, or adjudicated, as distinct from the substantive rights the law protects. In Indian constitutional law the phrase 'procedure established by law' in Article 21 originally meant any duly enacted process, until courts read fairness into it. Procedure versus due process is a classic GS-2 (polity) theme.

Example: A.K. Gopalan v. State of Madras (1950), where the Supreme Court first interpreted 'procedure established by law'.

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procedure decides outcomes

In the EIA debate, this phrase captures the idea that environmental clearance outcomes are shaped less by a project's merits and more by how the procedure is designed: who writes the report, who is consulted, and how much scrutiny applies. When procedures allow self-reported data, short public-hearing windows and wide exemptions, approvals follow almost automatically. The 2026 EIA reform debate centres on exactly this: whether procedural tweaks decide outcomes before appraisal even begins.

Example: The draft EIA 2020 notification's proposal to reduce the public consultation period from 30 to 20 days, criticised as a procedural change that would pre-decide outcomes in favour of project proponents.

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procedure established by law

Procedure established by law is the Article 21 guarantee that no person shall be deprived of life or personal liberty except according to an enacted legal procedure. In A. K. Gopalan (1950) the Supreme Court read it narrowly as any legislative procedure, but in Maneka Gandhi (1978) it held the procedure must be fair, just, and reasonable, effectively importing due-process standards into Indian law. Example: the Maneka Gandhi ruling striking down the arbitrary impounding of a passport.

Example: Maneka Gandhi v. Union of India (1978), where the Court struck down the arbitrary impounding of the petitioner's passport.

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process node

A process node is the generation of semiconductor manufacturing technology, historically named after the transistor's smallest feature size in nanometres. Smaller nodes (7 nm, 5 nm, 3 nm and below) generally pack more transistors per chip, improving performance and energy efficiency. The label is now partly marketing, since different foundries measure it differently, but it remains the industry's shorthand for chipmaking progress.

Example: TSMC's 3-nanometre node used for recent flagship smartphone processors, and India's Semicon India programme aiming to build domestic fabrication capacity.

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process patents

A process patent protects only the method or process of making a product, not the product itself. Under this regime, a competitor can legally sell the same product if it manufactures it through a different process. India granted only process patents for pharmaceuticals and agrochemicals from 1970 until the TRIPS-mandated shift to product patents in 2005.

Example: Before 2005, Indian generic drug makers reverse-engineered patented medicines through alternative manufacturing processes, which let them sell affordable versions of the same drug.

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Producer Price Index (PPI)

The Producer Price Index measures the average change in prices received by domestic producers for their output, capturing inflation at the factory gate rather than at wholesale or retail counters. India does not yet publish an official PPI, and an official working group has recommended replacing the Wholesale Price Index with it. The WPI versus PPI versus CPI distinction is a recurring GS-3 prelims point on inflation measurement.

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producer to facilitator

The producer-to-facilitator shift is the post-1991 change in the Indian state's economic role: from direct producer and owner of industry under the licence-permit raj to a facilitator that sets rules, builds infrastructure, and enables private enterprise. It rests on delicensing, deregulation, and market-led growth. UPSC significance: GS-3, the 1991 LPG reforms and the changing role of the state in the economy.

Example: the 1991 LPG reforms

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Producers

Producers are organisms that manufacture their own food, chiefly through photosynthesis, and therefore form the base of every food chain and energy pyramid. All consumers and decomposers ultimately depend on the chemical energy that producers fix from sunlight. In ecology they are also called autotrophs.

Example: Green plants, algae, and phytoplankton, which convert sunlight into food energy for the rest of the ecosystem

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product (value added), income, expenditure

These are the three standard approaches to measuring national income (GDP): the product method sums value added across sectors, the income method sums factor incomes like wages, rent, interest, and profits, and the expenditure method sums final spending on consumption, investment, government outlays, and net exports. All three should converge on the same GDP figure. UPSC significance: GS-3, Indian economy and national income accounting.

Example: the National Statistical Office's annual national accounts estimates

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product patents

A product patent protects the product itself, regardless of how it is made, giving the holder a monopoly over the invention for 20 years. No one may make, use or sell the patented product without a licence, even through a different process. India introduced product patents for pharmaceuticals and agrochemicals through the Patents (Amendment) Act, 2005, to comply with the WTO's TRIPS Agreement.

Example: A patented cancer drug under product-patent protection cannot be copied by generic firms in India, though compulsory licensing under Section 84 of the Patents Act remains available in the public interest.

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Production Linked Incentive (PLI) scheme

The Production Linked Incentive scheme, announced in 2020, gives financial incentives to companies on incremental sales of domestically manufactured goods across 13 sectors, including electronics, pharmaceuticals, automobiles, and textiles, with a total outlay of about Rs 1.97 lakh crore. It seeks to scale up manufacturing, exports, and jobs under Atmanirbhar Bharat, making it a GS-3 prelims and mains staple.

Example: Large-scale electronics manufacturing, the first PLI vertical notified in 2020

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Production Linked Incentive (PLI) schemes

Production Linked Incentive schemes are government programs that pay financial incentives to companies based on their incremental production and sales in strategically chosen sectors, rather than on investment alone. Announced in 2020 as part of the Atmanirbhar Bharat initiative, the schemes now cover 14 sectors with a total approved outlay of about Rs 1.97 lakh crore. They began with large-scale electronics manufacturing in April 2020 and were extended to sectors including pharmaceuticals, medical devices, automobiles, textiles, solar PV modules, and telecom equipment to boost domestic manufacturing, exports, and import substitution.

Example: The PLI scheme for large-scale electronics manufacturing, under which firms expanded mobile phone production in India and made the country the world's second-largest mobile phone manufacturer

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Productivity is the third engine

In growth accounting, productivity is the third engine of economic growth after increases in labour and capital: total factor productivity captures the growth that comes from better technology, efficiency, and organisation rather than from more inputs. Because it is computed as a residual, economists call it a measure of our ignorance. It matters for GS-3 mains answers on sustaining India's growth beyond mere factor accumulation.

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profit motive

The profit motive is the incentive for firms and individuals to undertake economic activity in expectation of earning a surplus over costs. Classical economists treat it as the engine that allocates resources efficiently through market signals, while critics note it can neglect welfare and equity. For UPSC it frames debates on capitalism, liberalisation and the role of the state.

Example: The 1991 delicensing of industry let firms enter most sectors on profit signals rather than government licences.

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Programme

In UPSC usage, a programme is a structured government intervention with defined objectives, components, and outlays, such as a nutrition or skilling programme, typically larger and more multi-dimensional than a single scheme. Prelims tests programme names, launch years, and nodal ministries, while mains evaluates their design and outcomes. Precise naming matters because programmes are often renamed or subsumed into umbrella missions.

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Programme / law

Programme / law is a column heading in the article's comparison table on wetlands, naming the government programme, mission, act, or rule being described in each row. It groups together the policy and legal instruments relevant to wetland conservation so they can be compared side by side.

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prohibited

In UPSC usage, 'prohibited' marks conduct expressly barred by the Constitution or statute, such as Article 23's prohibition of traffic in human beings and forced labour, or Article 17's abolition of untouchability. It signals a hard legal boundary backed by punishment, not merely discouraged behaviour. UPSC significance: GS-2 polity, fundamental rights and constitutional prohibitions.

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Prohibition

Prohibition is the legal ban on the production, sale, and consumption of liquor, which Article 47 of the Directive Principles directs the state to endeavour to bring about. States such as Gujarat, Bihar, Nagaland, and Mizoram enforce prohibition in varying forms, and debates weigh public health and social gains against revenue loss and illicit trade. It is a GS-2 topic linking DPSP with governance and federalism.

Example: Bihar's statewide prohibition, in force since April 2016

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Prohibition of Child Marriage Act

The Prohibition of Child Marriage Act, 2006 outlaws child marriage in India, replacing the Child Marriage Restraint Act of 1929. Enforced from November 2007, it makes child marriages voidable at the option of the minor party, punishes those who solemnise or promote them, and provides for Child Marriage Prohibition Officers.

Example: Courts have annulled child marriages on petitions filed by the minor party after attaining majority.

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Prohibition of Child Marriage Act (2006)

The Prohibition of Child Marriage Act (2006) makes child marriage punishable and provides for annulment, maintenance and protection officers. Enforcement remains the challenge, with community norms outlasting statutes. It is the legal instrument behind essays on child marriage.

Example: The 2006 Act criminalising and providing remedies against child marriage.

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Prohibition of Child Marriage Act 2006

The Prohibition of Child Marriage Act, 2006 outlaws child marriage in India, replacing the Child Marriage Restraint Act of 1929. Enforced from November 2007, it makes child marriages voidable at the option of the minor party, punishes those who solemnise or promote them, and provides for Child Marriage Prohibition Officers.

Example: Courts have annulled child marriages on petitions filed by the minor party after attaining majority.

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Prohibition of Child Marriage Act, 2006

The Prohibition of Child Marriage Act, 2006 replaced the Child Marriage Restraint Act of 1929 and defines a child as a female below 18 and a male below 21 years. It makes child marriage punishable with rigorous imprisonment up to two years and a fine, allows the marriage to be declared void, and provides for Child Marriage Prohibition Officers. It is a GS-1 and GS-2 prelims fact on social legislation and women's rights.

Example: The Child Marriage Restraint Act, 1929 (Sharda Act), which it replaced

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Project Elephant

Project Elephant, launched in 1992, is a centrally sponsored scheme of the Ministry of Environment, Forest and Climate Change for protecting elephants, their habitats, and migratory corridors, and for mitigating human-elephant conflict. It supports a network of Elephant Reserves across elephant-range states and funds anti-poaching and habitat work. It is a prelims environment staple, asked alongside Project Tiger of 1973.

Example: Gaj Yatra, the nationwide awareness campaign launched in 2017

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Project NETRA

Project NETRA, short for Network for Space Object Tracking and Analysis, is ISRO's indigenous space situational awareness initiative. Sanctioned in 2019, it builds radars, optical telescopes, and data-processing systems to monitor, catalogue, and predict the paths of satellites and space debris that could threaten Indian satellites. Its dedicated Space Situational Awareness Control Centre at ISTRAC, Bengaluru, was inaugurated in December 2020, giving India an independent collision-warning capability instead of relying on foreign tracking data.

Example: The NETRA control centre at Bengaluru issuing conjunction and collision-avoidance alerts for Indian satellites in crowded low-Earth orbit

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Project Tiger

Project Tiger is the centrally sponsored scheme launched in 1973 for in-situ conservation of the Bengal tiger, beginning with nine reserves including Jim Corbett National Park. It funds habitat protection, anti-poaching and relocation of villages from core areas, and is administered with the National Tiger Conservation Authority (statutory since 2006). For UPSC it is the flagship species-conservation programme and the model for Project Elephant and Project Lion.

Example: The 2022 all-India tiger estimation reported about 3,682 tigers, a figure routinely used to judge Project Tiger's five-decade record.

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Project Vaani

Project Vaani is a large-scale speech-data collection initiative instituted in 2022 by the Indian Institute of Science, ARTPARK, and Google. Using a district-anchored approach across India's 773 districts, it records open-source natural speech in diverse Indian languages and dialects to train AI models for speech recognition, translation, and language understanding. Its data underpins models like SraVaani, the open-source multilingual speech-recognition model released by IISc in 2026 covering 65 Indian languages and dialects.

Example: SraVaani, released in August 2026 and trained on Project Vaani data, converting speech to text in languages such as Garo, Tulu, and Kokborok

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Promise

Promise is a voluntary commitment to a future course of action that creates a moral obligation to fulfil it. Its key features are intention, communication to another party, and reliance, and breaking it erodes trust. Fidelity to promises underpins integrity, accountability, and the social contract between citizens and the state. For UPSC, it anchors GS-4 questions on ethics, probity, and the credibility of public commitments such as election manifestos.

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promise to the examiner

This phrase captures the ethics-paper expectation that a public servant's word must be bankable: commitments made to citizens, colleagues, or the public are honoured in deed, not traded away for convenience. It ties integrity to consistency between word and action. UPSC significance: GS-4, ethics, integrity, and accountability in public service.

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promotes social justice

To promote social justice is to orient state action toward fair distribution of opportunity and dignity, correcting historic disadvantage through reservations, welfare schemes, and anti-discrimination law. It flows from the Preamble's promise of justice and the Directive Principles of State Policy. UPSC significance: GS-2 (DPSPs, affirmative action) and GS-4 (values such as empathy and compassion).

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Promotion and Regulation of Online Gaming Act, 2025

The Promotion and Regulation of Online Gaming Act, 2025 is the central law passed by Parliament in August 2025 that bans online money games while promoting e-sports and social gaming. It prohibits offering, advertising and financing games played for monetary stakes, prescribes imprisonment and fines for violations, and creates the Online Gaming Authority of India for regulation.

Example: Real-money fantasy sports platforms withdrew paid contests after its passage.

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Prompt Corrective Action (PCA)

Prompt Corrective Action (PCA) is the RBI's norms-based supervisory framework that places financially weak banks under restrictions when they breach thresholds on capital adequacy (CRAR), net NPAs, or leverage. Curbs can cover dividends, branch expansion, and fresh lending until health is restored. Introduced in 2002 and tightened in 2017, it is a key UPSC prelims topic on banking regulation and financial stability.

Example: RBI's revised PCA framework of 2017

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Proof of Stake (PoS)

Proof of Stake is a blockchain consensus mechanism in which the right to validate transactions and create new blocks is assigned to participants based on the amount of cryptocurrency they lock up, or stake, as collateral. Because it does not require competitive number-crunching, it consumes a tiny fraction of the energy used by Proof of Work. Validators who act dishonestly risk losing their staked funds, which aligns incentives toward honest behavior.

Example: Ethereum's 2022 shift from Proof of Work to Proof of Stake in an upgrade called The Merge, which cut the network's energy use dramatically

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Proof of Work (PoW)

Proof of Work is a blockchain consensus mechanism in which participants called miners compete to solve computationally intensive puzzles, and the winner earns the right to add the next block of transactions. The puzzle-solving makes fraud expensive because rewriting history would require redoing enormous amounts of computation. Its main drawback is very high electricity consumption.

Example: Bitcoin mining, whose global electricity use rivals that of a mid-sized country

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propaganda weapon

Propaganda as a weapon is the deliberate use of media, rumour, and disinformation to demoralise enemies, radicalise populations, or manufacture consent for violence. It works through repetition, emotional appeal, and selective facts rather than reasoned argument. UPSC significance: GS-2 (international relations, information warfare) and GS-3 (media's role in internal security).

Example: RTLM radio broadcasts during the 1994 Rwandan genocide

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Proportional representation

Proportional representation is the family of electoral systems in which a party's or group's share of seats mirrors its share of votes, unlike first-past-the-post. Variants include party lists and the single transferable vote. For UPSC it matters because the Indian Constitution prescribes proportional representation by single transferable vote for the elections of the President (Article 55) and Vice-President, while Lok Sabha elections use first-past-the-post.

Example: The election of the President of India under Article 55 uses proportional representation by means of the single transferable vote.

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proportional representation by single transferable vote

Proportional representation by single transferable vote is the electoral system the Constitution prescribes for the President under Article 55 and for Rajya Sabha members under Article 80(4). Voters rank candidates by preference, a quota is fixed, and surplus votes transfer according to next preferences until all seats are filled. It gives minorities representation roughly proportional to their strength. Example: members of a state legislative assembly electing the state's Rajya Sabha MPs.

Example: Rajya Sabha elections, in which MLAs rank candidates to fill their state's seats in the upper house.

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proportional representation with the single transferable vote

This phrase describes the same electoral method used for India's indirect elections: seats are filled in proportion to vote shares through ranked preferences and vote transfers. The Constitution mandates it for the Vice-President under Article 66, alongside the President and Rajya Sabha. Voters mark first, second, and further preferences, and candidates reaching the quota are declared elected. Example: the electoral college of MPs and MLAs electing the Vice-President.

Example: The Vice-Presidential election, conducted by an electoral college of MPs and MLAs using proportional representation by single transferable vote.

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Proportionality

Proportionality is the doctrine that a state action must be proportionate to the legitimate aim it pursues, neither excessive nor arbitrary. Courts weigh the objective, the means chosen, and whether a less restrictive alternative existed. It is the core test in judicial review of administrative action and Article 14 challenges. For UPSC, it links GS-2 separation of powers and GS-4 ethical governance to landmark cases such as Om Kumar v Union of India (2000).

Example: Om Kumar v Union of India (2000)

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proposed, not enacted

This describes a bill, resolution, or reform that was formally introduced but never became law, lapsing with the dissolution of the legislature or being withdrawn by the government. It matters because intent without enactment changes nothing on the ground. UPSC significance: GS-2 polity, the legislative process and why many reform proposals stall before becoming law.

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Prosopis juliflora

Prosopis juliflora is a thorny tree or shrub, commonly called mesquite, that was introduced into India and has become aggressively invasive in arid regions, wastelands, and coastal tracts. It outcompetes native vegetation, alters soil and water regimes, and is difficult to eradicate because it coppices vigorously. In coastal ecology it is a concern because it can invade and degrade mangrove and salt-marsh habitats.

Example: Dense Prosopis juliflora thickets displacing native vegetation along the coasts and arid tracts of Gujarat and Tamil Nadu

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Protected cultivation

Protected cultivation is growing crops under controlled cover, in polyhouses, greenhouses, shade nets or polytunnels, that shields plants from weather extremes and pests. It enables year-round production of high-value vegetables, flowers and exotic crops with far higher yields per unit area, though it needs significant capital. For UPSC it is the standard example of technology-led diversification into high-value horticulture.

Example: Polyhouse capsicum and roses around Bengaluru supply urban markets through the year regardless of the monsoon.

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protected price

A protected price is the assured per-quintal rate fixed under Haryana's Bhavantar Bharpai Yojana for each covered horticulture crop. When the market price falls below it during the notified period, registered farmers receive the difference as compensation. For UPSC it is the horticulture-specific variant of deficiency payments.

Example: The protected price for kinnow ensures a citrus grower is compensated if mandi rates crash in season.

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Protected values

Protected values are moral commitments treated as non-negotiable, not to be traded off against convenience, profit, or competing goods. In public life they include integrity, human dignity, and constitutional loyalty. Unlike ordinary preferences, they resist cost-benefit bargaining. For UPSC, the concept is central to GS-4 ethics, explaining why civil servants must refuse corrupt or partisan demands even when the stakes seem high.

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Protection of Civil Rights Act, 1955

The Protection of Civil Rights Act, 1955 punishes the enforcement of untouchability, originally enacted as the Untouchability (Offences) Act and renamed in 1976. It criminalises denying Scheduled Caste persons access to temples, shops, wells, public transport and other public places, giving teeth to Article 17's abolition of untouchability.

Example: Prosecutions for barring Dalits from temple entry are filed under this Act.

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Protection of Human Rights Act

The Protection of Human Rights Act, 1993 created India's statutory human-rights architecture, establishing the National Human Rights Commission and State Human Rights Commissions. It defines human rights as those guaranteed by the Constitution and embodied in international covenants, and empowers the commissions to inquire into violations by public servants.

Example: The NHRC regularly intervenes in custodial-death and encounter cases.

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Protection of Plant Varieties and Farmers' Rights Act, 2001

The Protection of Plant Varieties and Farmers' Rights Act, 2001 is India's sui generis plant-variety protection law, enacted to meet the obligation under Article 27.3(b) of the TRIPS Agreement without adopting a patent-style system for plants. Uniquely among such laws worldwide, it balances breeders' exclusive rights over new varieties with strong farmers' rights, including the right to save, sow, re-sow, exchange, and share seed, and to seek compensation for crop failure of a registered variety. It established the PPV and FR Authority for registration of new, extant, and farmers' varieties.

Example: A breeder registering a new high-yielding wheat variety with the PPV and FR Authority, while farmers retain the legal right to save and replant seed from it

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Protection of Women from Domestic Violence Act

The Protection of Women from Domestic Violence Act, 2005 is the civil law that defines domestic violence broadly to include physical, sexual, verbal, emotional and economic abuse. It provides protection orders, residence orders, monetary relief and maintenance through magistrates, without requiring criminal prosecution. For UPSC it matters as the gender-justice complement to criminal provisions, with the 2016 Harsora judgment extending its ambit.

Example: In Hiral P. Harsora v. Kusum Narottamdas Harsora (2016), the Supreme Court struck down the Act's 'adult male' limitation, widening who can be proceeded against.

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Protection of Women from Domestic Violence Act (2005)

The Protection of Women from Domestic Violence Act (2005) is a civil law giving women in domestic relationships protection orders, residence orders and monetary relief against physical, sexual, verbal and economic abuse. It shifted domestic violence from a purely criminal frame to a rights-and-relief frame. It is the legal core of domestic-violence essays.

Example: The 2005 civil law protecting women from domestic abuse with orders and relief.

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Protection of Women from Domestic Violence Act, 2005

The Protection of Women from Domestic Violence Act, 2005 is a civil law shielding women from physical, sexual, verbal, emotional, and economic abuse within domestic relationships. It provides protection orders, residence orders in the shared household, monetary relief, and custody orders, enforced through Protection Officers and magistrates. A mains staple on gender justice, it marked India's first comprehensive legal recognition of domestic violence beyond criminal law.

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protects human dignity

The idea that law and governance must safeguard the inherent worth of every person, barring degrading treatment and guaranteeing conditions for a life of self-respect. In India this principle is read into Article 21's right to life and personal liberty. UPSC significance: GS-2 (fundamental rights) and GS-4 (human values, empathy, and compassion).

Example: Maneka Gandhi v. Union of India (1978)

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Protein Revolution

The Protein Revolution is the call, popularised around Budget 2015, to raise production of protein-rich foods, pulses, dairy, poultry, fish and meat, for nutritional security. It framed protein deficiency as the next frontier after the cereal-focused Green Revolution. For UPSC it links nutrition policy to livestock and pulse production.

Example: The push to expand pulse and poultry output as protein sources embodies the Protein Revolution.

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Protestant Reformation

The Protestant Reformation was the 16th-century movement that broke Western Christianity's unity by challenging papal authority, indulgences, and clerical corruption. Sparked by Martin Luther's 95 Theses at Wittenberg in 1517, it produced Lutheran, Calvinist, and Anglican churches and provoked the Catholic Counter-Reformation. For UPSC, it explains the religious wars of early modern Europe, the rise of nation states, and the printing press as a revolutionary medium.

Example: Martin Luther's 95 Theses (1517)

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protesting

Protesting is the collective public expression of dissent through marches, sit-ins, strikes, and demonstrations, protected in India under Articles 19(1)(a) and 19(1)(b) subject to reasonable restrictions. It is a pressure valve of democracy and a classic tool of social movements. UPSC significance: GS-2 (fundamental rights) and GS-1 (social movements in modern India).

Example: the 2020-21 farmers' protest at Delhi's borders

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Protests

Protests are collective public expressions of dissent, such as marches, strikes, and sit-ins, through which citizens press demands on the state. In India the right to protest flows from Articles 19(1)(a) and 19(1)(b), subject to reasonable restrictions for public order. The Supreme Court in the Shaheen Bagh judgment (2020) held that protests cannot indefinitely occupy public ways. It is a recurring GS-2 mains theme on rights versus order.

Example: Shaheen Bagh protests (2019-20)

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Prototype Fast Breeder Reactor (PFBR)

The Prototype Fast Breeder Reactor is India's 500 MWe sodium-cooled, pool-type fast breeder reactor at Kalpakkam, Tamil Nadu, designed by the Indira Gandhi Centre for Atomic Research and built and operated by BHAVINI. It uses uranium-plutonium mixed oxide (MOX) fuel and is called a breeder because it produces more fissile material than it consumes, converting fertile uranium-238 into fissile plutonium. Its attainment of first criticality in April 2026 marks the entry into Stage II of India's three-stage nuclear power programme and a step toward eventually harnessing India's vast thorium reserves.

Example: The PFBR attaining first criticality on 6 April 2026, beginning a self-sustaining chain reaction

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PROUD

The Programme on Removal of Unused Drugs, Kerala's drug take-back programme launched in Thiruvananthapuram district in 2019 to collect expired and unused medicines, especially antibiotics, from households and medical stores for scientific disposal. By keeping unused antibiotics out of the environment and the informal market, it supports Kerala's fight against antimicrobial resistance, and it has been expanded as nPROUD with pilots such as the one in Kozhikode. It is part of Kerala's pioneering state-level AMR strategy.

Example: Under nPROUD, volunteers collect expired medicines from homes in Kozhikode for safe incineration, preventing their misuse or re-entry into the supply chain.

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provenance metadata

Provenance metadata is information attached to digital content that records its origin, creation process and editing history. It lets viewers and platforms verify whether an image, video or text was AI-generated, by whom, and whether it has been altered. Standards such as the C2PA specification embed this data cryptographically so it survives sharing and cannot be silently stripped.

Example: A news photograph carrying C2PA credentials showing it was captured by a specific camera and not generated by AI, helping fact-checkers spot deepfakes.

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provinces grouped into three Sections

Under the Cabinet Mission Plan of 1946, British Indian provinces were to be grouped into three Sections: A (Hindu-majority provinces), B (north-western Muslim-majority provinces), and C (Bengal and Assam), each framing its own constitution before joining an all-India union. The contentious grouping clause helped sink the plan. UPSC significance: GS-1, modern Indian history and the road to Partition.

Example: the Cabinet Mission Plan, 1946

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provinces under Nayaks

After the decline of Vijayanagara, its southern provinces became the independent Nayak kingdoms of Madurai, Tanjore, and Gingee, ruled by former Vijayanagara governors from the 16th to 18th centuries. The Nayaks patronised temples, tanks, and Tamil literature, shaping early-modern Tamil country. UPSC significance: GS-1, medieval South Indian history.

Example: Madurai under Thirumalai Nayak (1623-1659)

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provincial autonomy

Provincial autonomy is the grant of self-governing powers to provinces, introduced in British India by the Government of India Act, 1935: dyarchy ended in the provinces, elected ministries became responsible to legislatures, though governors kept discretionary reserve powers. It enabled the Congress ministries of 1937. UPSC significance: GS-1 (constitutional developments) and GS-2 (federalism).

Example: the 1937 provincial elections under the 1935 Act

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Provincial Constitution Committee

The Provincial Constitution Committee was a Constituent Assembly committee chaired by Sardar Vallabhbhai Patel that framed the constitutional scheme for the provinces of independent India. Working alongside the Union Constitution Committee, it shaped the federal distribution of powers and provincial governance structures. It is a favourite prelims fact, since UPSC frequently asks aspirants to match Constituent Assembly committees with their chairpersons.

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Provision

Provision is a single clause, section, or stipulation within a statute, contract, or constitutional text that lays down a specific rule or arrangement. Legal interpretation turns on reading provisions harmoniously rather than in isolation. For UPSC, the word appears constantly in polity questions, where aspirants must recall which Article or section contains the provision governing matters from emergency powers to reservations.

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Provisional Government

A provisional government is a temporary administration that governs a country during transition, typically until a permanent constitutional order is established through elections or a constituent assembly. It exercises executive authority without a full democratic mandate. For UPSC, the classic example is India's Interim Government of 1946, which steered the transfer of power and whose members formed the first post-independence cabinet.

Example: Interim Government of India (1946)

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Provisional Government of Free India — Azad Hind

The Provisional Government of Free India, or Azad Hind, was the government-in-exile proclaimed by Subhas Chandra Bose at Singapore on 21 October 1943 during the Second World War. Backed by the Indian National Army and recognised by Axis powers, it claimed jurisdiction over Indian territory and took charge of the Andaman and Nicobar Islands. For UPSC, it symbolises the revolutionary strand of the freedom struggle and Bose's international diplomacy.

Example: Proclamation at Singapore, 21 October 1943

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Provisioning services

Provisioning services are one of the four categories of ecosystem services in the Millennium Ecosystem Assessment framework, covering the material products that humans obtain directly from ecosystems. They include food, fresh water, timber, fuelwood, fiber, genetic resources, and medicinal plants. Their sustainable management is central to debates on food security, forest policy, and biodiversity conservation.

Example: Marine fisheries supplying food and livelihoods, or forests providing timber and non-timber products like honey and medicinal herbs

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provisioning, regulating, supporting, and cultural

These are the four categories of ecosystem services identified by the Millennium Ecosystem Assessment of 2005. Provisioning services supply material goods like food, water and timber; regulating services include climate regulation and flood control; supporting services such as nutrient cycling underpin the other three; and cultural services cover recreation, spiritual and aesthetic benefits. The classification is the standard framework for valuing what ecosystems do for people.

Example: A mangrove forest provisioning fish and timber, regulating storm surges, supporting nutrient cycling, and offering cultural value through ecotourism.

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proxy war

A proxy war is a conflict in which rival powers avoid direct fighting and instead arm, fund, or advise third parties who do the fighting for them. It keeps great-power rivalry below the threshold of open war while devastating the host country. UPSC significance: GS-2, international relations and internal security.

Example: the Vietnam War (1955-1975)

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pseudo-secularism

Pseudo-secularism is a pejorative term in Indian political debate alleging that the state practises secularism selectively, appeasing minorities for votes rather than treating all religions equally. Critics use it to attack vote-bank politics; defenders call it a misreading of constitutional secularism. UPSC significance: GS-2, secularism and communalism debates.

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Pseudomonas

Pseudomonas is a genus of rod-shaped bacteria found widely in soil, water, and plant surfaces. Many species are decomposers that break down organic matter and cycle nutrients, while some promote plant growth and others cause disease in plants, animals, and humans. In ecology it is cited as an example of the microbial decomposers that drive nutrient cycling in soil.

Example: Pseudomonas fluorescens, a soil bacterium that decomposes organic matter and can protect plant roots from pathogens

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PSLV

The Polar Satellite Launch Vehicle is ISRO's workhorse expendable launch vehicle, a four-stage rocket using solid and liquid stages that is best known for placing satellites into sun-synchronous polar orbits. Operational since the 1990s, it has an exceptional reliability record and has launched landmark missions including Chandrayaan-1 and the Mars Orbiter Mission. It also serves the commercial market through dedicated commercial launches.

Example: The PSLV-C37 mission in 2017 set a world record by deploying 104 satellites in a single flight.

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PSLV-C57

PSLV-C57 was the 59th mission of ISRO's Polar Satellite Launch Vehicle, launched on 2 September 2023 from the Satish Dhawan Space Centre, Sriharikota, in the PSLV-XL configuration. It carried Aditya-L1, India's first space-based solar observatory, which was placed in a halo orbit around the Sun-Earth Lagrange point L1, about 1.5 million km from Earth, to study the solar corona, chromosphere and space weather with seven indigenous payloads.

Example: PSLV-C57 injected Aditya-L1 into a 235 by 19500 km orbit, from where the spacecraft cruised for about 127 days before reaching its L1 halo orbit on 6 January 2024.

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PSLV's first successful flight was in October 1994

The PSLV is ISRO's Polar Satellite Launch Vehicle, a four-stage rocket using alternating solid and liquid stages to place remote-sensing satellites into sun-synchronous polar orbits. After the partial failure of PSLV-D1 in September 1993, PSLV-D2 on 15 October 1994 successfully orbited IRS-P2, making the PSLV the workhorse of the Indian space programme and a favourite UPSC prelims fact on launch vehicles.

Example: PSLV-D2 placed IRS-P2 into orbit on 15 October 1994

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psychological safety

Psychological safety is a workplace climate in which people can admit mistakes, ask questions, and dissent without fear of humiliation or punishment. Research links it to team learning, innovation, and honest error reporting, all prized in administration. UPSC significance: GS-4, attitude, emotional intelligence, and leadership in public organisations.

Example: Amy Edmondson's research at Harvard Business School (1999)

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PTA

PTA is the Prevention of Terrorism (Temporary Provisions) Act of Sri Lanka, enacted in 1979 as an emergency anti-terror law. It allows prolonged detention without trial and has been criticised by human rights bodies for enabling arbitrary arrest and torture. It matters for UPSC because it links India's neighbourhood policy, the Tamil question, and GS-2 debates on balancing national security with civil liberties.

Example: Prevention of Terrorism (Temporary Provisions) Act No. 48 of 1979, Sri Lanka

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Public Accounts Committee

The Public Accounts Committee is a 22-member parliamentary committee, with 15 members from the Lok Sabha and 7 from the Rajya Sabha, that examines the Comptroller and Auditor General's reports on government accounts. By convention its chairperson comes from the opposition since 1967-68, and it is often called a mini-parliament. Ministers cannot be members.

Example: its examination of the CAG reports on 2G spectrum and coal-block allocations

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public campaigns that build citizen intolerance of corruption

These are awareness drives that make citizens refuse to pay bribes, report graft, and stigmatise corrupt behaviour, shifting anti-corruption from enforcement alone to social norms. They work through media, schools, and civil society outreach. UPSC significance: GS-4, probity in governance and citizen-centric anti-corruption strategy.

Example: the Central Vigilance Commission's Vigilance Awareness Week (observed since 2000)

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Public consultation

Public consultation is the stage in India's Environmental Impact Assessment process where the views of people likely to be affected by a proposed project are formally sought before environmental clearance is granted. It has two components: written responses to the draft EIA report and a public hearing conducted by the State Pollution Control Board. The draft EIA Notification 2020 controversially proposed reducing the consultation period from 30 days to 20 days.

Example: The public consultation stage of an EIA for a proposed mining project, where nearby residents submit written objections and speak at a hearing

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Public Distribution System

The Public Distribution System is India's food-subsidy network that supplies wheat, rice and now millets at highly subsidised prices through over 5 lakh fair price shops. Originating in wartime rationing, it became universal, then targeted in 1997, and rights-based under the NFSA in 2013. For UPSC it is the world's largest food-security programme and the perennial subject of leakage-versus-reform debates.

Example: A ration-card holder buying 5 kg of wheat at Rs 2 per kg from the village fair price shop uses the PDS.

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Public Distribution System (PDS)

The Public Distribution System is India's food-subsidy network that supplies wheat, rice and now millets at highly subsidised prices through over 5 lakh fair price shops. Originating in wartime rationing, it became universal, then targeted in 1997, and rights-based under the NFSA in 2013. For UPSC it is the world's largest food-security programme and the perennial subject of leakage-versus-reform debates.

Example: A ration-card holder buying 5 kg of wheat at Rs 2 per kg from the village fair price shop uses the PDS.

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Public Gambling Act (1867)

The Public Gambling Act (1867) is the colonial-era law against public gambling, long the only statute touching games of chance, hopelessly outpaced by the internet. Its obsolescence is the essay's exhibit of law lagging technology. It was effectively superseded for online play by the 2025 Act.

Example: The 1867 colonial gambling law outpaced by online gaming.

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public health and safety

Public health and safety is the consideration of how a project or activity affects the health and physical safety of nearby communities. In EIA it appears as a mandatory impact dimension: projects must assess risks such as air and water contamination, noise, hazardous-material accidents and disease vectors. Clearances can impose conditions, buffer zones or emergency plans to protect it.

Example: The safety conditions and emergency response plans imposed on a chemical plant near a settlement to prevent a Bhopal-type gas leak disaster.

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Public hearing

A public hearing is the in-person component of public consultation under the EIA Notification, 2006, convened by the State Pollution Control Board at or near the proposed project site. Affected people, local bodies, and stakeholders record their objections, suggestions, and concerns about the draft Environmental Impact Assessment report, and the proceedings form part of the record considered before environmental clearance. It is the principal formal channel for community participation in project approval.

Example: Villagers recording objections to a proposed thermal power plant at a public hearing chaired by the district administration

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Public Human Resources Council

The Public Human Resources Council is the apex body for civil-services reform under Mission Karmayogi, the National Programme for Civil Services Capacity Building. Chaired by the Prime Minister, it comprises select Union Ministers, Chief Ministers, HR practitioners and global thought leaders, and gives strategic direction to capacity building.

Example: It was approved by the Union Cabinet in September 2020 as part of Mission Karmayogi.

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Public interest

Public interest is the welfare, safety, and convenience of the community at large, as distinct from private or sectional gain. It is the touchstone for public interest litigation, for overriding exemptions under the RTI Act, and for justifying state action such as land acquisition. For UPSC, it is a core GS-4 value: every administrative decision must be tested against whether it genuinely serves the public interest.

Example: public interest litigation (PIL)

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Public Interest Litigation

Public Interest Litigation is the relaxation of locus standi that lets any public-spirited person move the courts for the rights of those unable to approach them. Born through epistolary jurisdiction in Hussainara Khatoon (1979) and S.P. Gupta (1981), it turned the judiciary into a forum for the disadvantaged.

Example: M.C. Mehta's environmental PILs led to landmark orders on Delhi's air pollution.

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Public Liability Insurance Act, 1991

The Public Liability Insurance Act, 1991 requires owners of hazardous installations to insure against immediate relief for accident victims, enacted after Bhopal.

Example: victims of a chemical leak get no-fault immediate relief under this Act

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public office is a public trust

This principle holds that public office is a trust held on behalf of citizens, not a personal asset: office-holders must act solely in the public interest and never use their position for private gain. It is the ethical core of the fiduciary model of governance. UPSC significance: GS-4, foundational values for civil servants and the Nolan principles.

Example: the Nolan Committee's Seven Principles of Public Life, UK (1995)

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Public Procurement Bill, 2012

The Public Procurement Bill, 2012 was introduced in the Lok Sabha to regulate government purchases of goods and services above Rs 50 lakh, seeking transparency, accountability, and probity in procurement. Referred to the Standing Committee on Finance, it received no report and lapsed with the 15th Lok Sabha; a revamped 2015 version also failed. For UPSC, it illustrates the long-pending demand for a central procurement law, a recurring GS-2 governance theme.

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Public Procurement Policy

Public Procurement Policy is the set of norms governing how governments buy goods, works, and services, covering tendering, bid evaluation, and grievance redressal. In India it rests on the General Financial Rules, 2017, CVC guidelines, the Government e-Marketplace, and Make in India purchase preferences. For UPSC, it connects GS-2 transparency and GS-3 infrastructure debates, since procurement accounts for a large share of public spending.

Example: Government e-Marketplace (GeM)

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Public Safety Bill

A Public Safety Bill is preventive detention legislation empowering the state to detain persons without trial to prevent acts prejudicial to security or public order. In India the reference point is the Jammu and Kashmir Public Safety Act, 1978, which permits detention up to one year on public-order grounds and two years on security grounds. For UPSC, it raises GS-2 debates on Article 22 safeguards, due process, and the balance between liberty and security.

Example: Jammu and Kashmir Public Safety Act, 1978

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Public sector banks

Public sector banks are banks in which the government holds a majority stake, created through the nationalisation of 14 major banks in 1969 and 6 more in 1980 to direct credit to priority sectors. After the 2020 amalgamations, 12 public sector banks remain, led by the State Bank of India. For UPSC they are central to debates on financial inclusion, NPAs, bank privatisation and the RBI's Prompt Corrective Action framework.

Example: The 2020 merger wave that folded ten public banks into four anchor banks reduced the PSB count to 12.

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public service

Public service is work undertaken for the welfare of the community rather than private profit, whether as a government employee, elected representative, or volunteer. It carries expectations of impartiality, dedication, and accountability to citizens. UPSC significance: GS-4, the ethical foundation of the civil services and the spirit of service.

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public service commissions

Public service commissions are constitutional bodies that recruit civil servants through merit-based competitive examinations: the Union Public Service Commission (Articles 315-323) for All-India and central services, and State Public Service Commissions for state services. They safeguard merit and insulate recruitment from politics. UPSC significance: GS-2, constitutional bodies.

Example: the UPSC, first created in 1926 under the Government of India Act, 1919

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Public Services Social Audit Act

The Public Services Social Audit Act is the short reference to the Meghalaya Community Participation and Public Services Social Audit Act, 2017, India's first law making social audit of government programmes a statutory practice. Passed in April 2017, it mandates citizen-led audits across departments and schemes, with findings placed before the Gram Sabha.

Example: Meghalaya piloted the audits in 18 villages in late 2017.

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public stockholding

Public stockholding is government procurement and storage of foodgrains, in India through the Food Corporation of India at minimum support prices, to run the public distribution system and stabilise prices. At the WTO it is contested as trade-distorting farm support. UPSC significance: GS-3, food security and India's WTO negotiations.

Example: the WTO Bali Ministerial's 2013 'peace clause' on public stockholding

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Public trust

Public trust is the doctrine that the state holds natural resources and common goods as a trustee for the people, not as an owner free to dispose of them arbitrarily. Courts have used it to scrutinise allocation of spectrum, mines, and water. For UPSC, it is vital for GS-2 and GS-3 answers on natural resource governance, environmental jurisprudence, and the limits of executive discretion.

Example: 2G spectrum judgment (2012)

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Public work culture

Public work culture is the shared set of attitudes, norms, and practices that shapes how government offices function day to day, from file disposal and punctuality to citizen responsiveness. A healthy work culture prizes outcome orientation and empathy, while a sclerotic one breeds delay and rent-seeking. For UPSC, it is a GS-4 theme linking administrative ethics to service delivery and the citizen-centric governance ideal.

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public works

Public works are infrastructure built or maintained by the state: roads, bridges, canals, railways, and public buildings. In colonial India the Public Works Department became the main agency of such construction, serving both development and imperial control. UPSC significance: GS-1 (colonial economic impact) and GS-3 (infrastructure).

Example: the Public Works Department, established in 1854 under Lord Dalhousie

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Public-Private Partnership

A Public-Private Partnership is a long-term contract in which a private party builds or operates public infrastructure and shares risks and rewards with the government. Indian models include BOT, BOOT, DBFOT, HAM, and TOT, widely used in highways, ports, and airports. For UPSC, PPPs are central to GS-3 infrastructure financing debates, balancing private efficiency against user charges and regulatory capture.

Example: Hybrid Annuity Model (HAM) in highway construction

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public-service oriented

A public-service oriented attitude puts citizens' needs and the larger public interest ahead of personal convenience, status, or gain. It shows in responsiveness, accessibility, and a willingness to go beyond the letter of the rules for genuine need. UPSC significance: GS-4, attitude and foundational values expected of civil servants.

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PUCL

PUCL is the People's Union for Civil Liberties, an Indian human rights organisation founded in 1976 by Jayaprakash Narayan during the Emergency to defend civil and democratic rights. It conducts fact-finding on custodial violence, encounter killings and free-speech curbs, and files public interest litigation. For UPSC it is the classic GS-2 example of civil society holding the state accountable, alongside cases like PUCL v. Union of India (1997) on phone tapping and privacy.

Example: PUCL v. Union of India (1997), the Supreme Court phone-tapping case

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Puducherry

Puducherry is a Union Territory with a legislative assembly under Article 239A and the Government of Union Territories Act, 1963. A former French colony, it comprises four geographically scattered enclaves: Puducherry and Karaikal in Tamil Nadu, Mahe in Kerala, and Yanam in Andhra Pradesh. For UPSC, it is a prelims staple on Union Territories, Article 239A legislatures, and Centre-UT relations.

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Puhar

Puhar, also called Kaveripattinam, was the ancient Chola port at the mouth of the Kaveri river in Tamil Nadu. Sangam works like the Pattinappalai and the epic Silappadikaram describe it as a great emporium trading with Rome and Southeast Asia, before it was lost to the sea. It matters for UPSC as evidence of the Cholas' early maritime economy and of Indo-Roman trade on the Coromandel coast.

Example: Tamil Sangam poems describe foreign ships anchored at Puhar's harbour, laden with pepper and textiles.

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Pulakeshin I

Pulakeshin I (reigned c. 543 to 566 CE) is the founder of the Chalukya dynasty of Vatapi (Badami), the first independent Chalukyan king. He established Vatapi as his capital, fortified it, and performed the Ashvamedha sacrifice to assert sovereign status. For UPSC he marks the beginning of the Deccan's great temple-building dynasty that later produced the Aihole, Badami and Pattadakal monuments.

Example: His choice of Vatapi (modern Badami) as capital made it the political and artistic base from which Chalukyan architecture spread.

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Pulakeshin II

Pulakeshin II, who reigned around 610 to 642 CE, was the greatest king of the Chalukyas of Badami (Vatapi). He checked Harshavardhana's advance at the Narmada, defeated the Pallava king Mahendravarman I, and received an embassy from the Persian king Khusrau II. For UPSC, his reign represents the peak of Deccan power in the seventh century, recorded in the Aihole inscription.

Example: The Ajanta caves contain a painting of the Persian embassy to his court, a standard prelims fact on ancient India's foreign contacts.

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Pulakesin II

Pulakesin II was the greatest Chalukya king of Vatapi, ruling circa 610 to 642 CE. He checked Harshavardhana's southward expansion by defeating him on the Narmada, extended Chalukya power across the Deccan, and exchanged embassies with the Persian king Khusrau II. His court poet Ravikirti's Aihole inscription is the key source for his reign. For UPSC, he anchors ancient-history questions on Deccan polity and Harsha's contemporaries.

Example: Aihole inscription of Ravikirti

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Pulin Behari Das

Pulin Behari Das (1877-1949) was an Indian revolutionary and the founder-president of the Dhaka Anushilan Samiti. Organising physical-culture akharas that doubled as revolutionary cells, he built a network of over 500 branches across East Bengal after the 1905 Partition. Arrested in the Barisal conspiracy case of 1913, he spent years in prison. For UPSC, he represents the revolutionary nationalist stream in Bengal's freedom struggle.

Example: Dhaka Anushilan Samiti (1905)

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pull

In UPSC economics and geography, 'pull' refers to attractive forces: in migration theory, pull factors like jobs and better living standards draw people toward destinations; in inflation theory, demand-pull inflation arises when excess demand pulls prices up. It is the counterpart of push forces. UPSC significance: GS-1 (migration) and GS-3 (inflation).

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Pulses

Pulses are the edible seeds of leguminous plants, including tur, urad, moong, masoor, gram and peas, and they are India's principal source of plant protein. Being legumes, they fix atmospheric nitrogen in the soil, so they improve soil health while needing less water and fertiliser than cereals. For UPSC, pulses sit at the intersection of nutrition security, crop diversification and import dependence, since India remains the world's largest producer, consumer and importer of pulses.

Example: Tur dal from Maharashtra and Karnataka and chana from Madhya Pradesh and Rajasthan dominate India's pulse basket.

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pulses and oilseeds, procurement is limited

While the government procures rice and wheat at MSP on a large scale through the FCI, procurement of pulses and oilseeds remains limited and sporadic, run through schemes like PM-AASHA and NAFED. Farmers of these crops face price crashes and distress sales. UPSC significance: GS-3, agricultural marketing and the MSP debate.

Example: the PM-AASHA scheme (2018)

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Pulwama

Pulwama is a district in Jammu and Kashmir that entered national consciousness after the 14 February 2019 suicide bombing of a CRPF convoy by Jaish-e-Mohammed, which killed 40 personnel. The attack triggered the Balakot airstrike of 26 February 2019 and a sharp escalation with Pakistan. For UPSC, Pulwama is essential for GS-3 internal security, cross-border terrorism, and India's counter-terrorism doctrine.

Example: Balakot airstrike (26 February 2019)

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punch-marked

Punch-marked describes India's earliest coins: irregular silver (sometimes copper) pieces stamped with symbols punched by separate dies, used from about the 6th century BCE. Each issuing merchant or authority punched its own mark, so designs accumulated on a single coin. UPSC significance: GS-1, ancient Indian economic history.

Example: silver karshapanas of Magadha (6th century BCE)

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punch-marked coins

Punch-marked coins are India's earliest known coinage: irregular silver pieces stamped with animal, plant, and geometric symbols punched by separate dies, circulating from about the 6th to 2nd century BCE across the mahajanapadas and the Mauryan empire. Buddhist texts call them kahapana. UPSC significance: GS-1, ancient Indian economy and trade.

Example: the silver karshapanas issued under the Magadhan kings

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Punchhi

M.M. Punchhi was the 28th Chief Justice of India, serving from January to October 1998, best known for chairing the Commission on Centre-State Relations from 2007 to 2010. The Punchhi Commission's report remains the most recent comprehensive review of federal relations in India.

Example: The commission's recommendations on restrained use of Article 356 are frequently cited in federalism debates.

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Punchhi Commission

The Punchhi Commission (2007), formally the second Commission on Centre-State Relations under former Chief Justice M.M. Punchhi, reviewed federal arrangements and submitted its report in 2010. It recommended clearer demarcation of legislative subjects, restraint in invoking Article 356, limits on Governors' discretion and a strengthened Inter-State Council.

Example: its safeguards on Article 356 echo the principles laid down in S.R. Bommai (1994)

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punctuality

Punctuality is the habit of being on time, keeping appointments and deadlines. In administration it signals respect for others' time, discipline, and reliability, and it underpins time-bound delivery of public services. UPSC significance: GS-4, work culture and professional ethics for civil servants.

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Punishments

Punishments are penalties imposed by lawful authority for wrongdoing, ranging from fines and imprisonment to capital punishment. Theories of punishment include retribution, deterrence, prevention, and reformation, with modern penology favouring reform. In India, the death penalty survives only in the rarest of rare cases. For UPSC, punishment theory enriches GS-4 ethics answers and GS-2 debates on criminal justice reform.

Example: rarest of rare doctrine (Bachan Singh, 1980)

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punitive deterrence

Punitive deterrence is the theory that punishing offenders deters both the punished individual (specific deterrence) and the wider public (general deterrence) from committing crime. It justifies penalties as prevention rather than revenge. UPSC significance: GS-4 (ethics of punishment) and GS-3 (criminal justice and internal security).

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Punjab

Punjab, the 'land of five rivers', is a northwestern region divided between India and Pakistan by the 1947 Partition, with the Indian state reorganised on linguistic lines in 1966. It became the heartland of the Green Revolution and Sikh religious identity, centred on Amritsar's Golden Temple. It matters for UPSC for Partition history, agrarian economy, water disputes, and border security with Pakistan.

Example: Punjab's high wheat and rice yields made it the showcase of Green Revolution success and later of its ecological costs.

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Punjab and Bengal

Punjab and Bengal were the two British Indian provinces partitioned between India and Pakistan in 1947 under the Mountbatten Plan and the Indian Independence Act. Boundary commissions under Sir Cyril Radcliffe drew the dividing lines in weeks, triggering one of history's largest mass migrations and communal violence. For UPSC, their partition is indispensable for understanding the human cost of independence and the Radcliffe Line.

Example: Radcliffe Line (1947)

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Punjab and Sind

Punjab and Sind were the two western provinces of British India at the time of Partition. While Punjab was divided between India and Pakistan by the Radcliffe Line, Sind passed entirely to Pakistan without partition. For UPSC, the contrast illustrates how the Mountbatten Plan treated provinces differently, shaping the demographic and political geography of both new nations.

Example: Indian Independence Act, 1947

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Punjab Reorganisation Act

The Punjab Reorganisation Act is the 1966 legislation that bifurcated the bilingual state of Punjab into Punjabi-speaking Punjab and Hindi-speaking Haryana, made Chandigarh a Union Territory serving as their joint capital, and transferred hill areas to Himachal Pradesh. Based on the Shah Commission's recommendations, it redrew the political map of northwest India. For UPSC, it is a key case study in linguistic reorganisation.

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Punjab Reorganisation Act, 1966

The Punjab Reorganisation Act, 1966, effective 1 November 1966, created the states of Punjab and Haryana from the former bilingual Punjab, designated Chandigarh a Union Territory as their shared capital, and merged hill regions into Himachal Pradesh. It followed the Shah Commission and the Punjabi Suba agitation. For UPSC, the Act is the standard reference for state reorganisation on linguistic lines after 1956.

Example: creation of Haryana on 1 November 1966

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Punjab, Haryana and western UP

Punjab, Haryana, and western Uttar Pradesh form the heartland of India's Green Revolution, where high-yielding variety seeds, assured irrigation, and fertilisers transformed wheat and rice output from the mid-1960s. The region became India's food bowl and the base of minimum support price procurement. For UPSC, it anchors GS-3 debates on agricultural productivity, groundwater depletion, and the need for a second green revolution.

Example: Green Revolution (1960s)

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Punjab, Kerala, West Bengal and Andhra Pradesh

Punjab, Kerala, West Bengal, and Andhra Pradesh is a multi-state grouping used in comparative discussions of Indian federalism and regional policy, illustrating how states with distinct political economies respond differently to national policies. For UPSC, it is a reminder that governance outcomes vary widely across states, making comparative state-level analysis a valuable mains answer-writing tool.

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Punjabi Suba

Punjabi Suba is the Punjabi-speaking state created on 1 November 1966 when Punjab was reorganised on linguistic lines after the Punjabi Suba agitation led by the Akali Dal. Haryana was carved out as a separate state and Chandigarh became a Union Territory shared as capital. For UPSC it is the key case of linguistic reorganisation after the 1956 States Reorganisation Act.

Example: Haryana came into existence as India's seventeenth state on 1 November 1966 through the Punjab reorganisation.

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Punjabi verses

Punjabi verses are devotional compositions in the Punjabi language by Bhakti and Sufi saints such as Guru Nanak, Baba Farid, and Bulleh Shah. Many were compiled in the Adi Granth of 1604, later the Guru Granth Sahib, giving Punjabi its first major literary corpus. For UPSC, they are central to medieval Bhakti movement questions and to the cultural history of Punjab.

Example: Guru Granth Sahib (Adi Granth, 1604)

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punyasalas

Punyasalas are charitable rest houses or almshouses of ancient and medieval India, literally 'houses of merit' (punya plus sala), where travellers, pilgrims, and the poor received free food and shelter. Kings, temples, and wealthy donors funded them as acts of dharma. UPSC significance: GS-1, ancient Indian social and economic life.

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Puram

Puram is one of the two great thematic divisions of classical Tamil (Sangam) poetry, dealing with public and outer life: war, kingship, heroism, generosity and ethics, as opposed to Akam, which treats love and inner life. Codified in the Tolkappiyam's Porulatikaram, its tinais classify landscapes of battle and court. For UPSC it is essential for ancient Tamil literature questions and the contrast with Akam poetics.

Example: The Purananuru anthology's Puram poems praising Chola king Karikala's valour are the standard illustration of the genre.

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Purana system

The Purana system is ancient India's coinage and weight standard centred on the silver punch-marked coin called purana or dharana, equivalent to the karshapana. Kautilya's Arthashastra fixes its standard at 32 rattis, and such coins circulated from the 6th century BCE through Mauryan times. For UPSC, it is a prelims favourite on ancient economy, monetisation, and the money economy of the Mahajanapada age.

Example: Kautilya's Arthashastra weight standard

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Puranas

The Puranas are encyclopaedic Sanskrit texts, eighteen Mahapuranas and eighteen Upapuranas, blending mythology, cosmology, royal genealogies, pilgrimage lore, and dharma. Traditionally ascribed to Vyasa and compiled between the 4th and 12th centuries CE, they carry the five characteristics called pancha-lakshana. For UPSC, they are key sources for ancient Indian religion, society, and dynastic history.

Example: Bhagavata Purana

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Purandara Dasa

Purandara Dasa (1484-1564) was the Haridasa saint-composer revered as the Pitamaha, or grandsire, of Carnatic music. He systematised music pedagogy through graded exercises such as sarali, jantai, and alankara still taught to beginners, and composed thousands of devotional songs in Kannada in praise of Vittala. For UPSC, he is the pivotal figure linking the Bhakti movement to South Indian classical music.

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Purandaradasa

Purandaradasa is an alternate rendering of Purandara Dasa (1484-1564), the Haridasa saint-composer honoured as the Pitamaha of Carnatic music. A devotee of Lord Vittala of Pandharpur, he structured Carnatic pedagogy with graded beginner exercises and composed innumerable Kannada kirtanas on devotion and ethics. For UPSC, the name tests recognition of the same Bhakti-era musician under variant spellings.

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purdah/zenana

Purdah is the practice of secluding women from unrelated men through veiling and separate living quarters; the zenana is the women's quarter of a household or palace where purdah was observed, most famously in Mughal royal households. It shaped women's public participation in medieval India. UPSC significance: GS-1, medieval society and women's history.

Example: the Mughal imperial zenana under Akbar

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Puri

Puri is a temple town on the Odisha coast that houses the Jagannath Temple, one of the four dhams of Hindu pilgrimage and the heart of the Jagannath tradition in Odia culture. Its annual Rath Yatra carries the wooden idols of Jagannath, Balabhadra and Subhadra on giant chariots before lakhs of devotees. It matters for UPSC as a classic prelims question on pilgrimage centres, Vaishnavism and Odishan temple architecture.

Example: Rath Yatra, Puri

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purification by returning to a golden-age scripture

This is the core move of religious revivalism: the claim that present corruption can be cured by returning to a pristine scripture or golden age, rejecting later accretions as adulteration. It powered many 19th-century reform movements that attacked idolatry and priestly ritual. UPSC significance: GS-1, socio-religious reform movements.

Example: Dayananda Saraswati's Arya Samaj (1875) and its call 'back to the Vedas'

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purity and pollution

Purity and pollution are the ritual concepts underpinning the caste hierarchy: occupations and groups are ranked by their supposed ritual purity, with 'polluting' contact through touch, food, or marriage requiring purification. Louis Dumont made this hierarchy central to his analysis of caste. UPSC significance: GS-1, Indian society and social stratification.

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Purna Swaraj

Purna Swaraj ('complete independence') is the demand adopted at the Lahore session of the Congress in December 1929 under Jawaharlal Nehru's presidency, replacing dominion status as the goal. The Congress resolved that 26 January 1930 be observed as Independence Day with a pledge for complete freedom. For UPSC it marks the radicalisation of the national movement that led directly to the Civil Disobedience Movement.

Example: The 26 January date chosen for the Purna Swaraj pledge in 1930 later became the date of the Constitution's commencement in 1950.

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purohita

A purohita is the royal priest and domestic chaplain of a king in ancient India, performing sacrifices, advising on dharma, and legitimising royal authority through ritual. The office gave Brahmanas direct influence over kingship from Vedic times onward. UPSC significance: GS-1, Vedic polity and early state formation.

Example: Vasishtha as purohita of the Bharata chief Sudas (Rig Veda)

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Purpose

Purpose is a column heading in the article's comparison table on nuclear energy, stating the objective or mandate of each nuclear institution, programme, or reactor listed in the table. It distinguishes what each entity exists to do, from power generation to research, regulation, or fuel-cycle services.

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Purusha Sukta

The Purusha Sukta is the celebrated cosmogonic hymn Rigveda 10.90 describing the primeval cosmic being (Purusha), whose self-sacrifice creates the universe. From his body emerge the moon, sun, gods and the four varnas: the Brahmin from the mouth, the Kshatriya from the arms, the Vaishya from the thighs and the Shudra from the feet. It is UPSC-significant as the earliest textual source for the varna system and Vedic cosmology.

Example: Cited in debates on the textual origins of caste in ancient Indian society.

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Purushapura

Purushapura is the ancient name of Peshawar, in present-day Pakistan, which became the imperial capital of the Kushana emperor Kanishka in the early centuries CE. From here the Kushanas controlled Silk Road trade between Central Asia and India and patronised Gandhara art, Buddhist monasteries and the Mathura school. For UPSC it is a key prelims fact linking Kanishka, Gandhara art and Silk Road trade.

Example: Kanishka

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PUSA bio-decomposer

The Pusa bio-decomposer is a microbial consortium of seven fungal species developed by ICAR's Indian Agricultural Research Institute, New Delhi, to decompose paddy straw in the field without burning. Supplied as capsules or liquid, it is mixed with water, jaggery and besan and sprayed on stubble, where its enzymes digest cellulose, lignin and pectin, turning the residue into compost in about three to four weeks.

Example: Delhi, Punjab, Haryana and Uttar Pradesh sprayed Pusa decomposer on paddy stubble fields in the winters after 2020 as a low-cost alternative to stubble burning, a major driver of seasonal air pollution in the NCR.

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push

In UPSC usage, 'push' refers to repelling forces: in migration theory, push factors like poverty, unemployment, or conflict drive people away from their homes; in inflation theory, cost-push inflation arises when rising input costs push prices up. It is the counterpart of pull forces. UPSC significance: GS-1 (migration) and GS-3 (inflation).

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push and pull

Push and pull together form the classic framework of migration theory: push factors such as poverty, conflict, and unemployment drive people out of a place, while pull factors such as jobs, security, and better services attract them elsewhere. Migration is explained as the balance between the two forces. UPSC significance: GS-1, human geography and urbanisation.

Example: Everett Lee's 1966 theory of migration

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push and pull factors

Push and pull factors are the forces that drive migration. Push factors are conditions that drive people away from a place, such as unemployment, conflict, drought, or persecution, while pull factors attract them to a destination, such as jobs, security, and better services. Together they explain rural-to-urban and cross-border movement. They serve GS-1 human and economic geography and GS-2 population policy.

Example: the Partition of India in 1947, when communal violence pushed millions across the new borders

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pushkarinis

Pushkarinis are stepped ritual bathing tanks built beside temples across India, known regionally as kalyani, kunda, sarovara, or tirtha. Descending stone steps lead to stored rainwater used for ritual purification before worship, and the tanks doubled as rainwater harvesting structures in dry regions. They matter for GS-1 art, culture, and ancient Indian water management.

Example: the geometric stepped tank in the royal enclosure of Vijayanagara at Hampi, Karnataka

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Pushpak

Pushpak is the name given to ISRO's winged Reusable Launch Vehicle Technology Demonstrator (RLV-TD), the test vehicle for India's reusable spaceplane program. It has successfully demonstrated autonomous runway landing in the RLV Landing Experiment (RLV-LEX) missions flown from the Aeronautical Test Range at Chitradurga. These experiments are stepping stones toward a fully reusable two-stage-to-orbit launch system that would sharply cut the cost of access to space.

Example: The RLV-LEX landing experiments of 2023 and 2024, in which the winged Pushpak vehicle was released from a helicopter and landed autonomously on a runway

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Pushtimarg

Pushtimarg is Vallabha's path of grace within Shuddhadvaita, in which nourishment by divine favour, rather than effort alone, sustains loving service to Krishna. It matters as the devotional system that carried Vedanta philosophy into prosperous merchant households and temple communities across Gujarat and the Braj region.

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Pushyabhutis

The Pushyabhutis are the dynasty that rose at Thanesar (modern Haryana) in the late sixth century CE, remembered chiefly for King Harshavardhana, who ruled most of northern India from 606 to 647 CE. Harsha's court produced Bana's Harshacharita, supported Nalanda, and hosted the Chinese traveller Hiuen Tsang. They matter for UPSC as the bridge between the Guptas and the early medieval kingdoms.

Example: Harshavardhana (606-647 CE)

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Pushyagupta

Pushyagupta is the Mauryan provincial governor of Saurashtra under Chandragupta Maurya who is credited by the Junagadh rock inscription of Rudradaman I with originally building the Sudarshana lake near Girnar. His project was an early state investment in irrigation and water conservation in an arid region, later repaired by Ashoka's governor Tushaspha and by Skandagupta's men. A favourite UPSC prelims fact on Mauryan administration.

Example: Sudarshana lake, Junagadh

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Puttaswamy

Puttaswamy is shorthand for Justice K.S. Puttaswamy v. Union of India, the unanimous nine-judge Supreme Court judgment of August 2017 declaring the right to privacy a fundamental right under Article 21. The verdict overruled earlier precedents and became the foundation for later rulings on Aadhaar, decriminalisation of Section 377 and the data protection debate. It is essential for UPSC polity, both prelims and mains.

Example: Supreme Court judgment of 24 August 2017

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PVTG

A Particularly Vulnerable Tribal Group is a sub-category of Scheduled Tribes identified as the most backward among tribals. Acting on the Dhebar Commission's recommendation, 52 Primitive Tribal Groups were listed in 1975, raised to 75 in 1993, and renamed PVTGs in 2006. Identification rests on pre-agricultural technology, low literacy, economic backwardness, and stagnant or declining population. For UPSC it links tribal welfare with inclusive development.

Example: The Jarawa of the Andaman Islands.

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PVTGs

PVTGs are the 75 tribal communities officially recognised as Particularly Vulnerable Tribal Groups, spread across 18 states and one Union Territory. They include groups such as the Baiga, Dongria Kondh, Saharia, and Great Andamanese. The Ministry of Tribal Affairs runs targeted schemes for them, notably the PM-JANMAN mission launched in 2023. For UPSC they are central to questions on tribal policy and affirmative action.

Example: PM-JANMAN's push for pucca housing in PVTG habitations.

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PWD Act, 1995

PWD Act, 1995 is the Persons with Disabilities (Equal Opportunities, Protection of Rights and Full Participation) Act, 1995, India's first comprehensive disability law. It mandated 3 percent reservation in government jobs, barrier-free access in public buildings, and special schools. It matters for UPSC as the foundation of GS-2 social justice answers on disability rights, later strengthened by the Rights of Persons with Disabilities Act, 2016.

Example: 3 percent reservation in government jobs under the 1995 Act

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PWM (Amendment) Rules, 2026

Notified on 31 March 2026 by the Ministry of Environment, Forest and Climate Change, these rules amend the Plastic Waste Management Rules, 2016, and for the first time make recycled content mandatory in plastic packaging. Producers, importers and brand owners must use minimum and steadily rising percentages of recycled plastic in their packaging, alongside reuse targets, labelling of recycled content and digital traceability of EPR compliance.

Example: Rigid plastic (Category I) packaging must contain 30 percent recycled content in 2025-26, rising to 60 percent by 2028-29, and firms missing food-contact targets may carry the shortfall forward up to three years by clearing at least a third of the deficit each year.

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Pyotr Stolypin's agrarian reforms (1906-11)

Pyotr Stolypin's agrarian reforms are the 1906-1911 Russian programme that let peasants leave the village commune (mir) and consolidate scattered strips into private farms, supported by Peasant Land Bank loans and settlement in Siberia. As prime minister after the 1905 Revolution, Stolypin hoped a class of loyal private farmers would stabilise the tsarist order. They matter for UPSC world history as a case study of top-down reform before 1917.

Example: Decree of November 1906 dissolving the mir

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pyramid of biomass

The pyramid of biomass is a graphical representation of the total living mass at each trophic level of an ecosystem at a given time. In most terrestrial ecosystems it is upright, with the largest biomass in producers and progressively less in herbivores and carnivores. In aquatic systems it can be inverted, because fast-reproducing phytoplankton support a larger zooplankton biomass at any single instant.

Example: A grassland pyramid showing the mass of grass far exceeding the combined mass of the grasshoppers, frogs and snakes it supports.

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pyramid of energy

The pyramid of energy shows the flow of energy through each trophic level of an ecosystem over a given period. It is always upright, because energy is lost as heat at every transfer and only about 10 per cent passes to the next level, so no higher level can contain more energy than the one below it. Of the three ecological pyramids, it gives the truest picture of an ecosystem's functioning.

Example: A forest study measuring kilocalories per square metre per year at the producer, herbivore and carnivore levels, with the values always shrinking upward.

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pyramid of number

The pyramid of number represents the count of individual organisms at each trophic level of a food chain. It is typically upright: many grass plants supporting fewer grasshoppers, fewer frogs and still fewer snakes. It can be inverted, as with a single large tree supporting thousands of insects, or take a spindle shape in parasitic food chains.

Example: One banyan tree hosting thousands of insects, which in turn feed a smaller number of insect-eating birds: an inverted pyramid of number.

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pyroclastic flows

Pyroclastic flows are fast-moving currents of hot gas, ash and rock fragments racing down a volcano's slopes at hundreds of kilometres per hour. They are the deadliest volcanic hazard.

Example: the 1902 eruption of Mount Pelee destroyed St. Pierre with a pyroclastic flow

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