Terms starting with J.

J.A. Hobson

J.A. Hobson (1858-1940) was the English economist whose book 'Imperialism: A Study' (1902) argued that imperialism sprang from underconsumption at home, with surplus capital seeking profitable outlets abroad. His thesis deeply influenced Lenin's theory of imperialism. For UPSC, Hobson is important for GS-1 world history and economics optional questions on the economic causes of colonialism.

Example: Lenin's 'Imperialism, the Highest Stage of Capitalism' (1916), which built on Hobson's underconsumption analysis.

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J.B. Kripalani

J.B. Kripalani, known as Acharya Kripalani, was president of the Congress at independence in 1947 and later became a leading opposition figure. He matters for UPSC in parliamentary history: in 1963 he moved the first-ever no-confidence motion against the Nehru government, after the India-China war.

Example: His 1963 no-confidence motion, the landmark that established the opposition's right to test the government on the floor.

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J.C. Shah

Justice J.C. Shah was the former Chief Justice of India who headed the Shah Commission, appointed in 1977 by the Janata government to inquire into excesses committed during the Emergency of 1975-77. The Commission's reports documented misuse of authority, forced sterilisations and press censorship. For UPSC, the Shah Commission is the definitive official record of the Emergency, vital for GS-2 polity and post-independence history.

Example: The Shah Commission's 1978 reports documenting Emergency-era excesses, including misuse of MISA and press censorship.

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J.P. Saunders

J.P. Saunders was the British assistant superintendent of police in Lahore who was shot dead on 17 December 1928 by Bhagat Singh, Rajguru and Sukhdev. The revolutionaries had intended to kill Superintendent Scott in revenge for Lala Lajpat Rai's death but mistook Saunders for him. For UPSC, the assassination and the resulting Lahore Conspiracy Case are landmarks of the revolutionary nationalist phase.

Example: The Lahore Conspiracy Case trial that followed, in which Bhagat Singh and his comrades were sentenced to death.

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J.R. Jayewardene

J.R. Jayewardene (1906-1996) was the Sri Lankan leader who became the country's first executive president under the 1978 Constitution, concentrating power in the presidency. He signed the Indo-Sri Lanka Accord of 29 July 1987 with Rajiv Gandhi, which led to the IPKF deployment amid the Tamil ethnic conflict. For UPSC, he is central to GS-2 India-Sri Lanka relations and neighbourhood policy.

Example: The Indo-Sri Lanka Accord of 29 July 1987, signed with Rajiv Gandhi, which paved the way for the IPKF's deployment.

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Jacobins

The Jacobins were the radical political club that dominated the French Revolution after 1792, drawing their name from their meeting place in a Paris Dominican convent. Led by figures like Robespierre, they pushed for a republic, universal male suffrage and war against monarchies, and steered the National Convention through the Reign of Terror of 1793-94. They matter for UPSC as the classic study of revolutionary radicalisation.

Example: The Reign of Terror of 1793-94, when the Jacobin-led government used revolutionary tribunals and the guillotine against perceived enemies.

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Jaduguda Underground Science Laboratory

The Jaduguda Underground Science Laboratory (JUSL) is India's underground physics laboratory located at a depth of 555 metres inside the Uranium Corporation of India Limited's uranium mine at Jaduguda, near Jamshedpur in Jharkhand. Set up by the Saha Institute of Nuclear Physics, Kolkata, with UCIL and inaugurated in 2017, it is the country's first such facility since the Kolar gold mine laboratory closed in 1992, and hosts dark matter search experiments such as DINO and InDEx that need shielding from cosmic rays.

Example: The InDEx (Indian Dark matter search Experiment) uses superheated liquid detectors at JUSL to search for low-mass WIMP dark matter candidates.

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Jagadish Chandra Bose

An Indian polymath (1858 to 1937) who pioneered research on radio waves and plant physiology, demonstrating that plants respond to external stimuli and inventing the crescograph to measure plant growth. His microwave experiments in the 1890s laid groundwork later used in radio communication.

Example: Bose's 1895 public demonstration of wireless signalling in Kolkata is regarded as a pioneering achievement in the history of radio.

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Jagannath Temple at Puri

The Jagannath Temple at Puri, Odisha, is a 12th-century Kalinga-style shrine dedicated to Jagannath, a form of Vishnu, alongside Balabhadra and Subhadra. Begun by the Eastern Ganga king Anantavarman Chodaganga Deva, its curvilinear shikhara and carved walls typify Odishan temple architecture. One of the Char Dham pilgrimage sites, it matters for UPSC for art, culture and bhakti traditions.

Example: The annual Rath Yatra, when the three deities are carried on giant chariots to the Gundicha temple.

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Jagat Seth

Jagat Seth was the title of the fabulously wealthy banking house of Bengal in the 18th century, hereditary bankers to the nawabs from Murshid Quli Khan's time. Their credit network financed trade and state revenue alike. The Seths joined the conspiracy of Mir Jafar and the British against Siraj-ud-Daulah. They matter for UPSC as the classic case of indigenous capital aligning with colonial power.

Example: Their financial backing of the British helped make the 1757 Battle of Plassey possible.

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jagir

A jagir was a Mughal assignment of land-revenue rights granted to nobles and mansabdars (jagirdars) in place of cash salary, entitling the holder to collect the state's share of produce from a specified territory. Unlike the Delhi Sultanate's iqta, jagirs were generally non-hereditary, transferable, and subject to imperial audit. It is core GS-1 vocabulary for the Mughal mansabdari system.

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Jagjivan Ram

Jagjivan Ram was a veteran Congress leader and India's most prominent Dalit political figure of his generation, a minister almost continuously from 1946 and Deputy Prime Minister in the 1977 Janata government. As Defence Minister during the 1971 war he oversaw India's military victory. He matters for UPSC as a symbol of Dalit representation in high office and of Congress-era coalition building.

Example: He served as Deputy Prime Minister under Morarji Desai in 1977-79.

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Jahangir's

In UPSC usage, 'Jahangir's' denotes the era of the Mughal emperor Nur-ud-din Jahangir, who ruled from 1605 to 1627 as Akbar's son. His reign is noted for the chain of justice, the political influence of Nur Jahan, the continued expansion that included Mewar's submission, and the golden age of Mughal painting. It matters for UPSC as a standard medieval-history tag for questions on Mughal administration and art.

Example: Ustad Mansur, the court painter famed for natural-history studies under Jahangir's patronage.

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Jahangir's reign = golden age

This phrase records the historical judgment that Jahangir's reign, from 1605 to 1627, was a golden age, applied most firmly to Mughal painting, which reached new heights of naturalism, portraiture and natural-history illustration under his personal patronage. The label is contested, since some historians reserve 'golden age' for Akbar's statecraft or Shah Jahan's architecture. It matters for UPSC as a recurring art-and-culture evaluation.

Example: Ustad Mansur's celebrated studies of birds and animals painted at Jahangir's court.

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Jahaz Mahal

Jahaz Mahal, the 'ship palace', is the celebrated 15th-century monument at Mandu, Madhya Pradesh, built by Ghiyas-ud-din Khalji of the Malwa Sultanate, who ruled from 1469 to 1500. Set on a narrow strip between the Munj and Kapur reservoirs, its double-storeyed mass looks like a ship floating on water. It served as the royal harem. It matters for UPSC as a landmark of provincial Indo-Islamic architecture.

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Jai Jawan Jai Kisan

'Jai Jawan Jai Kisan', meaning 'Hail the Soldier, Hail the Farmer', is the slogan coined by Prime Minister Lal Bahadur Shastri in 1965. Raised during the India-Pakistan war and a severe food crisis, it honoured soldiers defending the borders and farmers feeding the nation. It matters for UPSC as the defining motto of the Shastri era and a staple of modern Indian history questions on nationalism and self-reliance.

Example: Shastri raised the slogan in 1965 while India fought Pakistan and faced acute foodgrain shortages.

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Jaimal and Patta

Jaimal Rathore of Badnor and Patta, or Fateh Singh Sisodia of Kelwa, were the Rajput commanders entrusted with Chittorgarh's defence during Akbar's siege of 1567-68, after Rana Udai Singh II withdrew to the hills. Jaimal was killed by a musket shot fired by Akbar himself on 23 February 1568, and Patta fell soon after. They matter for UPSC as the iconic Rajput resistance of the third jauhar of Chittor.

Example: Akbar honoured their courage by placing stone statues of Jaimal and Patta at the gates of Agra fort.

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Jain Agamas

The Jain Agamas are the canonical scriptures of Svetambara Jainism, a corpus of 45 texts including the 12 Angas, 12 Upangas and other works on doctrine, monastic conduct and cosmology. Compiled and written down at the Vallabhi council in the 5th century CE under Devardhigani, they preserve Mahavira's teachings. They matter for UPSC as the primary source for ancient Indian religious and philosophical history.

Example: The Bhagavati Sutra, one of the 12 Angas, records Mahavira's dialogues on doctrine.

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Jain Commission's interim report

The Jain Commission's interim report was the 1997 finding of Justice M.C. Jain's panel on the conspiracy behind Rajiv Gandhi's assassination. It held that the DMK had given tacit support to the LTTE, whose cadres killed Gandhi. The Congress demanded the ouster of DMK ministers from the Gujral cabinet, and when I.K. Gujral refused, the Congress withdrew support. It matters for UPSC as a case study of coalition instability.

Example: The report's leak in November 1997 brought down the Gujral government and forced the 1998 mid-term election.

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Jain tirthankaras

The Jain tirthankaras are the 24 'ford-makers' of Jainism, liberated souls who reveal the path to moksha in each cosmic cycle. They begin with Rishabhdev and end with Parshvanath, the 23rd, and Mahavira, the 24th, the historical teachers of the 8th to 6th centuries BCE. Each is associated with a symbol and attained kevala jnana. They matter for UPSC as the backbone of Jain cosmology and religious art.

Example: Mahavira, the 24th tirthankara, preached the five vows including ahimsa.

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Jainism

Jainism is an ancient Indian religion centred on non-violence, truth and ascetic self-discipline as the path to liberation from the cycle of rebirth. Its teachings were systematised by the 24 tirthankaras, culminating in Mahavira in the 6th century BCE. Its doctrines include the triratna of right faith, right knowledge and right conduct, and anekantavada, the multiplicity of viewpoints. It split into Svetambara and Digambara sects.

Example: The monolithic Gomateshwara statue at Shravanabelagola, a landmark of Jain art.

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Jaish-e-Mohammed

Jaish-e-Mohammed is a Pakistan-based terrorist organisation founded in 2000 by Masood Azhar after his release in the IC-814 hijacking hostage exchange. It seeks to wrest Kashmir from India through jihad and has been designated a terrorist group by the UN, India and others. It matters for UPSC for internal security, cross-border terrorism and India-Pakistan relations.

Example: The February 2019 Pulwama suicide bombing that killed 40 CRPF personnel, claimed by Jaish, which triggered India's Balakot airstrike.

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Jaish-e-Mohammed (JeM)

Jaish-e-Mohammed is the Pakistan-based jihadist group founded by Masood Azhar after his release in the 1999 Kandahar hijacking exchange. It carried out the 2001 Parliament attack and the 2019 Pulwama bombing. It matters as the group behind the deadliest attacks on Indian security forces.

Example: JeM's 2019 Pulwama suicide bombing

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Jal Jeevan Mission

The Jal Jeevan Mission, launched in 2019, aims at Har Ghar Jal: a piped tap-water connection to every rural household, with water-quality testing and community ownership through village water and sanitation committees. It matters for UPSC in drinking-water security, centre-state cost sharing, and the shift from infrastructure creation to assured service delivery.

Example: The mission dashboard reporting tap connections to a majority of rural households.

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Jal Shakti Abhiyan

The Jal Shakti Abhiyan is a time-bound, mission-mode water-conservation campaign launched in 2019, focused on rainwater harvesting, renovation of traditional water bodies, and intensive afforestation in water-stressed blocks, later continued as 'Catch the Rain'. It matters for UPSC as a case study in water governance through community participation and convergence of schemes.

Example: Desilting and revival of village ponds and check dams under the campaign.

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Jal Shakti Abhiyan: Catch the Rain

A nationwide water-conservation campaign launched by the Prime Minister on 22 March 2021, World Water Day, with the theme Catch the rain, where it falls, when it falls, implemented by the Ministry of Jal Shakti. Covering all districts in rural and urban areas, it promotes rainwater harvesting structures, revival of traditional water bodies, enumeration and geo-tagging of water bodies, setting up of Jal Shakti Kendras and intensive afforestation through people's participation.

Example: The campaign nudges states, panchayats and citizens to build rooftop rainwater harvesting and recharge structures suited to local rainfall and soil conditions before each monsoon.

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jaladurga

Jaladurga is the Sanskrit and Marathi term for a water fort, one of the classical categories of Indian forts alongside hill, forest, and land forts. Built on islands or surrounded by water, jaladurgas were central to coastal defence and Maratha naval strategy under Chhatrapati Shivaji. They feature in GS-1 art, culture, and history.

Example: Sindhudurg Fort off Malvan, built by Shivaji between 1664 and 1667

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Jalaluddin Khalji

Jalaluddin Khalji, who ruled from 1290 to 1296, was the founder of the Khalji dynasty of the Delhi Sultanate, whose rise after deposing the last Mamluk ruler is called the Khalji Revolution of 1290. Known as a mild and generous ruler, he was murdered by his ambitious nephew and son-in-law Alauddin at Kara in 1296. He matters for UPSC as the bridge between the Slave and Khalji dynasties.

Example: His assassination by Alauddin Khalji in 1296, who then seized the Delhi throne.

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Jalaluddin Muhammad Akbar

Jalaluddin Muhammad Akbar is the full name of Akbar, the third Mughal emperor, who ruled from 1556 to 1605 as the son of Humayun. His long reign saw the consolidation of Mughal power across north India, the mansabdari system, the policy of sulh-i-kul, or universal tolerance, and the founding of Fatehpur Sikri. He matters for UPSC as the archetype of Mughal administrative genius and religious accommodation.

Example: He abolished the jizya tax on non-Muslims in 1564.

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jali

A jali is a perforated stone or marble lattice screen in Indian architecture, used to admit diffused light and air while allowing screened viewing, notably for women in purdah. It is a hallmark of Mughal and Rajput design, carved with geometric and floral patterns. For GS-1 art and culture it exemplifies the fusion of function and ornament in Indo-Islamic architecture.

Example: The marble jali screens around the cenotaphs in the Taj Mahal, which filter light into the burial chamber while preserving privacy.

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Jallianwala Bagh (13 April 1919)

Jallianwala Bagh is the enclosed public garden in Amritsar where, on Baisakhi day, 13 April 1919, Brigadier General Reginald Dyer ordered troops to fire without warning on an unarmed gathering, killing hundreds. The crowd had assembled despite martial-law prohibitions during the anti-Rowlatt agitation. It matters for UPSC as the turning point that pushed Gandhi toward non-cooperation.

Example: Rabindranath Tagore renounced his British knighthood in protest against the massacre.

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Jallianwala Bagh massacre (13 April)

The Jallianwala Bagh massacre was the 13 April 1919 killing of hundreds of unarmed Indians in Amritsar by troops under General Dyer, who fired until ammunition ran low and blocked the garden's exits. An official inquiry, the Hunter Committee, criticised Dyer but imposed no serious punishment. It matters for UPSC as the single most cited symbol of colonial brutality in the freedom movement.

Example: The Hunter Committee of 1919, the official inquiry that condemned Dyer's actions.

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Jalyukt Shivar

Jalyukt Shivar is Maharashtra's flagship water-conservation programme for drought-proofing villages through watershed works: check dams, farm ponds, desilting and recharge structures.

Example: villages under Jalyukt Shivar report improved well levels after good monsoons

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JAM

JAM is the Jan Dhan-Aadhaar-Mobile trinity, the government's framework for direct benefit transfer and financial inclusion. Jan Dhan accounts, Aadhaar identity, and mobile connectivity together let subsidies reach beneficiaries directly, cutting leakage. It matters for UPSC as the architecture behind DBT and welfare-delivery reform.

Example: LPG subsidy transfers under PAHAL flowing through the JAM pipeline.

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JAM trinity

The JAM trinity, Jan Dhan bank accounts, Aadhaar identity and Mobile connectivity, is India's framework for delivering subsidies and welfare directly to beneficiaries, cutting leakage and middlemen. Proposed in the Economic Survey of 2014-15, it underpins Direct Benefit Transfer across schemes. For UPSC, JAM is the backbone of GS-2 and GS-3 answers on financial inclusion, digital governance and subsidy reform.

Example: PAHAL, the Direct Benefit Transfer scheme for LPG subsidies, which routes payments through JAM-linked accounts.

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JAM trinity — Jan Dhan accounts, Aadhaar identity, mobile connectivity

The JAM trinity combines three pillars: Jan Dhan accounts giving every household a bank account, Aadhaar providing a unique biometric identity, and mobile connectivity enabling last-mile reach. Together they create a verifiable pipeline for Direct Benefit Transfer, reducing diversion of subsidies. For UPSC, each pillar maps to financial inclusion, digital identity and telecom penetration in GS-2 and GS-3.

Example: PAHAL, the Direct Benefit Transfer scheme for LPG subsidies, built on Jan Dhan accounts, Aadhaar and mobile verification.

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jama

Jama is the Persian-derived term for the total assessed land-revenue demand fixed on a tract, village, or individual cultivator in the Delhi Sultanate and Mughal fiscal systems. Officials computed it from measured land and crop rates, and it became the basis for collecting revenue through zamindars and jagirdars. UPSC significance: GS-1 and GS-2 questions on medieval revenue administration.

Example: Todar Mal's zabti settlement under Akbar (1580s), which regularised the jama

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Jama Masjid

A Jama Masjid is the principal congregational mosque of a city, designed to hold the Friday prayers of the whole community. In UPSC usage the term most often means Delhi's Jama Masjid, commissioned by Shah Jahan and completed in 1656, one of the largest mosques in India, built in red sandstone and white marble. It matters for UPSC as a monument of Shahjahani architecture.

Example: Delhi's Jama Masjid, built by Shah Jahan between 1650 and 1656, with its twin minarets and three marble domes.

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Jama Masjid at Gulbarga

The Jama Masjid at Gulbarga, Karnataka, is a 1367 Bahmani congregational mosque inside Gulbarga fort, built by Sultan Muhammad Shah I to commemorate the city as his capital. Designed by the Persian architect Rafi of Qazvin, it is unique in India: it has no open courtyard, the prayer hall being entirely covered with small domes, and no minarets. It matters for UPSC as a landmark of early Deccan Islamic architecture.

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Jamaat-e-Islami

Jamaat-e-Islami is an Islamist socio-political movement founded in 1941 at Lahore by the scholar Abul Ala Maududi, who argued for an Islamic order in public life. After Partition it split into national organisations, including Jamaat-e-Islami Hind in India, which works within the constitutional framework on education and social welfare. It matters for UPSC for questions on communalism, identity politics and South Asian Islamism.

Example: Jamaat-e-Islami Hind, the Indian chapter, which operates as a lawful socio-religious organisation.

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James Augustus Hickey in 1780

James Augustus Hickey was the Irish printer who in 1780 launched the Bengal Gazette from Calcutta, India's first newspaper. The weekly fearlessly criticised Governor-General Warren Hastings and the East India Company's officials, leading to Hickey's prosecution and imprisonment. He matters for UPSC as the founder of the Indian press and the first test case of press freedom under colonial rule.

Example: The Bengal Gazette of 1780, India's first newspaper, printed in Calcutta by Hickey.

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James Prinsep

James Prinsep was the British antiquarian and secretary of the Asiatic Society of Bengal who deciphered the Brahmi script in 1837, using bilingual Greek-Brahmi coins of Indo-Greek kings as his key. His breakthrough unlocked Ashoka's edicts and founded scientific Indian epigraphy. For UPSC, Prinsep explains how ancient Indian history was recovered from stone, coins and seals.

Example: Deciphering Brahmi let scholars read Ashoka's rock edicts, revealing the Mauryan emperor's dhamma policy for the first time.

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James Watson

co-discoverer of the DNA double helix; shared the 1962 Nobel Prize in Physiology or Medicine with Francis Crick and Maurice Wilkins.

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James Watt's steam engine (1769, perfected in the 1770s)

James Watt's steam engine, patented in 1769 and perfected with Matthew Boulton in the 1770s, added a separate condenser that made steam power far more fuel-efficient than Newcomen's engine. It could drive rotary machinery, powering textile mills, mines and later railways. It matters for UPSC as the signature technology of the Industrial Revolution and the shift from human to machine energy.

Example: Boulton and Watt engines were installed to drain mines and drive textile mills across industrial Britain.

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James Webb Space Telescope

The James Webb Space Telescope is the largest and most powerful space telescope ever built, launched in December 2021 by NASA together with the European and Canadian space agencies. Its 6.5-metre gold-coated mirror observes the universe in infrared light, allowing it to see the earliest galaxies, peer through dust clouds where stars are born, and study the atmospheres of exoplanets. It is stationed at the Sun-Earth Lagrange point L2, about 1.5 million km from Earth, where a sunshield keeps its instruments cold enough for infrared observation.

Example: In July 2022 it released its first deep-field image of the galaxy cluster SMACS 0723, showing galaxies whose light has travelled for over 13 billion years, the deepest infrared view of the early universe then captured.

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James Webb Space Telescope (JWST)

JWST is the short form of the James Webb Space Telescope, the infrared observatory launched in December 2021 as the successor to the Hubble Space Telescope. With a 6.5-metre segmented mirror and instruments cooled to near absolute zero, it studies the first stars and galaxies, star and planet formation, and the chemical makeup of exoplanet atmospheres. It operates from the Sun-Earth Lagrange point L2, about 1.5 million km from Earth, with a tennis-court-sized sunshield blocking heat from the Sun, Earth and Moon.

Example: JWST's spectrographs have detected carbon dioxide and water vapour in the atmospheres of distant exoplanets, showing how the telescope analyses planetary chemistry from 1.5 million km away.

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Jammu and Kashmir Reorganisation Act, 2019

The Jammu and Kashmir Reorganisation Act, 2019 bifurcated the former state into two Union Territories: Jammu and Kashmir with a legislature, and Ladakh without one, following the abrogation of Article 370. It matters for UPSC on Parliament's reorganisation powers under Article 3, federalism, and the Supreme Court's December 2023 verdict upholding the abrogation while directing elections in Jammu and Kashmir.

Example: Ladakh becoming a separate Union Territory on 31 October 2019.

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Jammu region with the Kashmir Valley

In UPSC usage, 'Jammu region with the Kashmir Valley' denotes the composite character of the former state of Jammu and Kashmir, which united three distinct regions, Jammu, the Kashmir Valley and Ladakh, under one administration after the 1947 Instrument of Accession signed by Maharaja Hari Singh. It matters for UPSC for Article 370, federalism and the 2019 reorganisation.

Example: The Jammu and Kashmir Reorganisation Act, 2019, which split the state into the Union Territories of Jammu and Kashmir, and Ladakh.

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Jamnibas

Jamnibas was a Persian court ritual of kissing the sultan's hands, introduced in the Delhi Sultanate by Ghiyas-ud-din Balban, who ruled from 1266 to 1286, alongside sizda, or prostration, paibos, kissing the feet, and the Naurauz festival. These ceremonies made the sultan a semi-divine figure above the nobility. It matters for UPSC as evidence of the Persianisation of the Delhi Sultanate's kingship.

Example: Balban used such rituals to assert that the sultan was God's shadow on earth, above the Chahalgani nobles.

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Jamshedpur

Jamshedpur, in present-day Jharkhand, is India's first planned industrial city, founded by the Parsi industrialist Jamsetji Tata as the site of Tata Iron and Steel Company's steel plant. Chosen for its iron-ore and coal hinterland, the plant began production in 1912. It matters for UPSC as the symbol of indigenous industrialisation and the Swadeshi-era enterprise that predated independence.

Example: The Tata steel plant at Sakchi, later renamed Jamshedpur, began steel production in 1912.

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Jan Dhan

Jan Dhan refers to the Pradhan Mantri Jan Dhan Yojana, the 2014 financial-inclusion mission that opened zero-balance bank accounts for unbanked households, with RuPay debit cards and overdraft facilities. It created the account backbone for direct benefit transfers. It matters for UPSC for financial inclusion, digital governance and welfare delivery.

Example: Its accounts carry the direct benefit transfer payments of schemes like the LPG subsidy and PM-KISAN.

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Jan Dhan–Aadhaar–Mobile (JAM) trinity

The Jan Dhan, Aadhaar and Mobile (JAM) trinity is India's three-part digital delivery infrastructure linking Jan Dhan bank accounts, Aadhaar biometric identity and mobile phone connectivity. Together they let the state transfer benefits directly to verified recipients, cutting leakages and intermediaries in welfare delivery. For UPSC, JAM is the core example of digital financial inclusion and direct benefit transfer.

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Jan Vishwas (Amendment of Provisions) Act, 2023

The Jan Vishwas (Amendment of Provisions) Act, 2023, notified on 11 August 2023, decriminalised 183 provisions across 42 Central Acts administered by 19 ministries and departments, replacing imprisonment for minor, technical, or procedural defaults with monetary penalties. It matters for UPSC as the centrepiece of the ease-of-doing-business and trust-based-governance reform push.

Example: Minor offences under laws such as the Patents Act shifted from jail terms to civil penalties.

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Jan Vishwas Act

The Jan Vishwas Act is the common short name for the Jan Vishwas (Amendment of Provisions) Act, 2023, which replaced jail terms with civil penalties for minor, technical, or procedural offences across 42 central laws. It matters for UPSC as shorthand for the decriminalisation-of-business-laws reform agenda.

Example: The 2023 Act decriminalising 183 provisions to reduce the fear of imprisonment for small enterprises.

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Jan Vishwas Act 2023

The Jan Vishwas Act 2023 is the same legislation as the Jan Vishwas (Amendment of Provisions) Act, 2023, notified on 11 August 2023. It decriminalised 183 provisions in 42 Central Acts, converting imprisonment for minor defaults into monetary penalties. It matters for UPSC wherever the decriminalisation and ease-of-doing-business reforms are discussed.

Example: First-time contraventions under covered laws attracting warnings or penalties instead of prosecution.

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Jan Vishwas Act, 2023

Jan Vishwas Act, 2023 is the punctuated short form of the Jan Vishwas (Amendment of Provisions) Act, 2023, the law that decriminalised 183 provisions across 42 Central Acts administered by 19 ministries. It matters for UPSC as the landmark of trust-based governance replacing criminal punishment for minor business defaults.

Example: The Act's replacement of jail terms with adjudicated monetary penalties.

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jana

In the Vedic age, the jana was the tribe or people, the basic political and kinship unit, led by a rajan. Several janas coalesced into janapadas, territorial states, and later into the sixteen mahajanapadas of the 6th century BCE. The jana-to-janapada transition marks the shift from tribal to territorial polity in GS-1 ancient history.

Example: The Kuru jana of the upper Ganga doab, among the earliest Vedic tribes to consolidate into a territorial kingdom.

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Janani Shishu Suraksha Karyakram

The Janani Shishu Suraksha Karyakram, launched in 2011, entitles pregnant women and sick newborns to completely free care in public facilities: delivery, drugs, diagnostics, transport, and diet, with zero out-of-pocket expense. It complements the Janani Suraksha Yojana by removing cost barriers to institutional care. It matters for UPSC in maternal and newborn health policy.

Example: Free ambulance transport for a woman in labour to the nearest public hospital.

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Janani Suraksha Yojana

The Janani Suraksha Yojana is a 2005 conditional cash-transfer scheme under the National Health Mission that pays mothers to deliver in health institutions, using ASHA workers to connect households with facilities. It sharply raised institutional deliveries across India. It matters for UPSC as the landmark maternal-health intervention behind India's falling maternal mortality ratio.

Example: Cash assistance paid to a rural mother for an institutional delivery facilitated by her ASHA.

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Janapada

A janapada, literally the 'foothold of a tribe', was a territorial state of ancient India where a tribe settled on a defined territory with a capital and administration. Janapadas emerged from tribal chiefdoms in the later Vedic period and evolved by the 6th century BCE into the 16 mahajanapadas. They matter for UPSC as the bridge between tribal polities and the Mauryan empire.

Example: The 16 mahajanapadas, such as Magadha, Kosala and Vatsa, listed in the Anguttara Nikaya.

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Janata Boards

Janata Boards appear in current-affairs reporting as a transparency measure under the reported 2025 recast of MGNREGA as the Viksit Bharat Guarantee for Rozgar and Ajeevika Mission (Gramin): public display boards at worksites, alongside biometric attendance, meant to plug leakage. The term is cited from 2025-26 reporting rather than an established scheme, so it matters for UPSC as current affairs to be verified against final legislation.

Example: The reporting pairs Janata Boards with biometric attendance as the scheme's anti-leakage layer.

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Janata Party

The Janata Party was the coalition of opposition parties, including the Jana Sangh, Congress (O), Socialists and others, that defeated Indira Gandhi's Congress in the 1977 general election after the Emergency. Led by Morarji Desai, it formed India's first non-Congress government at the Centre. For UPSC, it marks the first great test of democratic resilience: the electorate voted the Emergency out.

Example: Morarji Desai became Prime Minister in March 1977, and his government restored democratic norms and passed the 44th Amendment.

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Janatana Sarkar

Janatana Sarkar, meaning people's government, is the parallel administration run by Maoists in areas they dominate, with departments for justice, education, health and taxation. It collects levies, runs kangaroo courts and enforces boycotts of elections. It matters because it is the concrete expression of the Maoist goal of building a state within the state.

Example: Maoist jan adalats dispensing summary justice in Bastar

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JANMAN

JANMAN is short for PM-JANMAN, the Pradhan Mantri Janjati Adivasi Nyaya Maha Abhiyan, launched on 15 November 2023 with an outlay of Rs 24,104 crore to saturate 75 Particularly Vulnerable Tribal Groups with housing, water, roads, health, and connectivity through 11 interventions across nine ministries. It matters for UPSC as the flagship of targeted tribal welfare and last-mile delivery.

Example: Pucca houses sanctioned for PVTG households under the mission.

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January 2015, the Planning Commission was replaced by NITI Aayog

In January 2015 the Union Cabinet replaced the 65-year-old Planning Commission with NITI Aayog, the National Institution for Transforming India, a policy think tank designed for cooperative federalism. Unlike the Commission's top-down Five-Year Plans, NITI Aayog's Governing Council includes all chief ministers and focuses on strategy, monitoring and competitive federalism. It matters for UPSC for polity, governance and planning questions.

Example: NITI Aayog's Governing Council, chaired by the Prime Minister with all state chief ministers as members.

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Japan

Japan is an East Asian island nation, a G7 member and one of the world's largest economies, known for advanced manufacturing and technology. For UPSC, Japan is one of India's most important strategic partners, central to Quad cooperation, the Indo-Pacific architecture and infrastructure investment.

Example: The India-Japan Act East Forum funds connectivity and infrastructure projects in India's Northeast.

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Japan's defeat of Russia

Japan's defeat of Russia refers to Japan's victory in the Russo-Japanese War of 1904 to 1905, the first time a modern Asian power defeated a European great power. The war, fought over Korea and Manchuria, ended with the Treaty of Portsmouth in 1905 and shattered the myth of European invincibility. It matters for UPSC because it electrified Asian nationalism, including India's Swadeshi generation, who saw proof that colonial powers could be beaten.

Example: Indian nationalists drew inspiration from Japan's victory during the Swadeshi movement of 1905, launched after the Partition of Bengal.

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Japan's defeat of Russia in 1905

The phrase marks the year Japan's victory over Russia became formal, with the Treaty of Portsmouth signed in September 1905 ending the Russo-Japanese War. Brokered by US President Theodore Roosevelt, the treaty recognised Japan's dominance in Korea and its gains in Manchuria. It matters for UPSC because 1905 is a hinge year in world history, linking Japan's rise, Russia's 1905 Revolution, and the surge of nationalist movements across Asia, including India's.

Example: The Treaty of Portsmouth, signed in September 1905, ended the war and recognised Japan's paramount interests in Korea.

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Japanese surrender on 2 September 1945

The Japanese surrender on 2 September 1945 was the ceremony aboard the USS Missouri in Tokyo Bay at which Japan signed the Instrument of Surrender, ending the Second World War. With the war over, Britain faced pressure in India, Congress leaders were released, and the INA trials began within months. It matters for UPSC because the end of the war is the starting point of the final phase of the freedom struggle, from the INA trials to the Cabinet Mission.

Example: Foreign Minister Mamoru Shigemitsu signed the surrender aboard the USS Missouri in Tokyo Bay on 2 September 1945.

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Jarnail Singh Bhindranwale

Jarnail Singh Bhindranwale was the head of the Damdami Taksal, a Sikh religious seminary, who became the central figure of the Khalistan militancy in Punjab in the early 1980s. Operating from the Golden Temple complex, he demanded greater Sikh autonomy and confronted the state, until he was killed in Operation Blue Star in June 1984. He matters for UPSC because the Punjab crisis of the 1980s is studied under communalism, federal tensions, and the misuse of Article 356.

Example: He was killed during Operation Blue Star, the army action at the Golden Temple complex in Amritsar in June 1984.

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Jataka tales

The Jataka tales are a collection of stories about the Buddha's previous births, forming part of the Khuddaka Nikaya of the Sutta Pitaka. Written in Pali, they blend moral lessons with vivid glimpses of ancient Indian society, trade, and customs. For UPSC, the Jatakas are a major literary source for Mauryan and pre-Mauryan social and economic life, and their scenes are carved on the railings of the Sanchi and Bharhut stupas.

Example: The sculpted panels of the Sanchi and Bharhut stupas narrate Jataka stories in stone, giving art-historical form to the literary tradition.

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jati

Jati is the endogamous, birth-based community group that forms the operative unit of the Indian caste order. There are thousands of jatis, ranked by notions of purity and pollution, governing marriage, occupation, and ritual life, and they are distinct from the fourfold varna scheme of the texts. UPSC significance: GS-1 society (social stratification) and GS-2 questions on reservation and social justice.

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Jatra

Jatra is a popular folk theatre form of Bengal, performed by travelling troupes on open-air stages before large rural audiences. Its plays draw on mythology, devotion, history and social reform, blending song, dance, dialogue and melodrama. Jatra matters for UPSC because it is a classic example of India's living folk performance traditions, showing how theatre carried religious stories, nationalist ideas and social messages to the masses long before modern media.

Example: Krishna Jatra performances, enacting episodes from Krishna's life, remain a staple of village fairs in Bengal.

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Jatra Oraon

Jatra Oraon, better known as Jatra Bhagat, was the Oraon tribal leader who launched the Tana Bhagat movement in Chotanagpur in 1914. He preached monotheism, non-violence, abstinence from liquor and meat, and resistance to zamindars, moneylenders and British taxes. The movement later merged with Gandhian non-cooperation. He matters for UPSC because the Tana Bhagats show how tribal religious reform turned into disciplined, non-violent anti-colonial politics.

Example: Tana Bhagat followers joined the Non-Cooperation Movement of 1920 to 1922, wearing khadi and boycotting foreign goods.

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Jawaharlal Nehru

Jawaharlal Nehru was India's first Prime Minister (1947 to 1964) and the principal architect of its early institutions: parliamentary democracy, planned industrialisation, scientific temper and non-alignment. A central figure of the freedom movement and author of The Discovery of India, he shaped the Congress's socialist and internationalist outlook. For UPSC, Nehru frames debates on the Nehruvian model of development and foreign policy.

Example: He moved the Objectives Resolution in the Constituent Assembly on 13 December 1946, laying the philosophical foundation of the Constitution.

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Jawaharlal Nehru and Liaquat Ali Khan

Jawaharlal Nehru and Liaquat Ali Khan were the prime ministers of India and Pakistan who signed the Nehru-Liaquat Pact, also called the Delhi Pact, on 8 April 1950. The pact guaranteed the rights of minorities in both countries and provided for minority commissions after Partition riots in Bengal. It matters for UPSC because it is the foundational bilateral agreement on minority protection and a reference point for all later India-Pakistan accords.

Example: The pact was signed in New Delhi on 8 April 1950, following communal violence in East and West Bengal.

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Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)

The Jawaharlal Nehru Centre for Advanced Scientific Research is an autonomous multidisciplinary research institute at Jakkur, Bengaluru, set up by the Department of Science and Technology in 1989 to mark the birth centenary of Jawaharlal Nehru. Founded by Bharat Ratna laureate C. N. R. Rao, it is now a deemed university carrying out advanced research in chemistry, physics, materials science, engineering and biology. It has consistently ranked among India's top research institutions in the National Institutional Ranking Framework and the Nature Index.

Example: JNCASR's research groups work on areas such as nanomaterials, energy storage and water purification, including low-cost arsenic and fluoride removal technologies developed for rural water supply.

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Jawaharlal Nehru himself appearing in his barrister's robes

The phrase captures Jawaharlal Nehru, trained as a barrister at the Inner Temple in London, appearing in his barrister's robes as part of the defence team in the INA trials at the Red Fort in 1945 to 1946. His presence turned a court martial into a national political event. It matters for UPSC because the image symbolises how the Congress leadership publicly aligned with the INA, turning the trials into a rallying point of the final freedom struggle.

Example: Nehru joined the defence team led by Bhulabhai Desai at the first INA trial, which opened at the Red Fort in November 1945.

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JAY

JAY stands for Jan Arogya Yojana, the health-insurance component of Ayushman Bharat, usually cited as PM-JAY (Pradhan Mantri Jan Arogya Yojana). It provides cashless cover of Rs 5 lakh per family per year for secondary and tertiary hospitalisation to the poorest 40 percent of families. It matters for UPSC in health-financing debates, especially the 'missing middle' above the PM-JAY line without private cover.

Example: Cashless surgery at an empanelled hospital under PM-JAY.

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Jayachandra

Jayachandra was the Gahadavala king of Kannauj, ruling from about 1170 to 1194, and a rival of Prithviraj Chauhan. He was defeated and killed by Muhammad Ghori at the Battle of Chandawar in 1194, which opened the Gangetic plain to Turkish rule. He matters for UPSC because his defeat marks the collapse of the last great Rajput kingdom of the Doab and the consolidation of the Delhi Sultanate's foundations.

Example: He was killed at the Battle of Chandawar in 1194, fought near Kannauj against Muhammad Ghori.

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Jayadeva's Gitagovinda

Jayadeva's Gitagovinda is a twelfth-century Sanskrit lyrical poem composed by Jayadeva, court poet of the Sena king Lakshmana Sena of Bengal. Written in twelve cantos of ashtapadis, it celebrates the love of Radha and Krishna and became a fountainhead of the Bhakti movement. It matters for UPSC because it links Sanskrit literature, devotional religion and classical dance, since its ashtapadis are central to the Odissi repertoire.

Example: The ashtapadis of the Gitagovinda form the core song repertoire of Odissi dance.

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Jayaprakash Narayan

Jayaprakash Narayan (1902 to 1979), known as JP, was a socialist leader who led the 1974 Total Revolution movement against corruption and misrule, mobilising students and youth in Bihar. His call for 'sampoorna kranti' made him the moral face of the opposition to Indira Gandhi's Emergency. For UPSC, JP's movement explains the political crisis that produced the 1975 Emergency and the first non-Congress government in 1977.

Example: His 1974 call for Total Revolution sparked the Bihar movement that culminated in the formation of the Janata Party and Indira Gandhi's defeat in the 1977 election.

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Jayaprakash Narayan's

The term points to Jayaprakash Narayan, the socialist leader known as JP, who called for Sampoorna Kranti or Total Revolution against corruption and authoritarianism in the 1970s. He led the Bihar student movement of 1974 and became the moral face of the opposition to the Emergency of 1975 to 1977. He matters for UPSC because his movement united the opposition into the Janata Party, which won the 1977 election and ended the Emergency.

Example: The Janata Party's victory in the 1977 general election, ending the Emergency, was the political outcome of JP's movement.

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Jean-Baptiste Tavernier

Jean-Baptiste Tavernier was a seventeenth-century French gem merchant who made six voyages to India between the 1630s and 1660s. His book Travels in India, published in 1676, is a prized foreign account of the Mughal empire under Shah Jahan and Aurangzeb, describing the diamond trade, court splendour and the Peacock Throne. He matters for UPSC because foreign travellers' accounts are key sources for reconstructing Mughal economic and court history.

Example: Tavernier's eyewitness description of the Peacock Throne is a standard source on Shah Jahan's court.

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Jean-Jacques Rousseau

Jean-Jacques Rousseau (1712 to 1778) was the Genevan philosopher whose theory of the social contract argued that legitimate authority rests on the general will of the people rather than divine right. His ideas of popular sovereignty and equality deeply influenced the French Revolution and modern democratic thought. For UPSC ethics and political science, Rousseau is the key counterpoint to Hobbes and Locke on liberty and the state.

Example: Revolutionaries in 1789 France invoked his ideals of liberty and popular sovereignty.

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Jeevamrit

Jeevamrit is the fermented microbial culture of Zero Budget Natural Farming, prepared from cow dung, cow urine, jaggery, pulse flour and soil. Applied to soil through irrigation, it multiplies beneficial microbes that unlock nutrients for plants, replacing synthetic fertilisers. For UPSC it is the flagship ZBNF input demonstrating low-cost, cow-based soil fertility management.

Example: Monthly Jeevamrit applications through drip lines keep a natural-farming orchard productive without a single bag of urea.

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Jeevan Reddy Committee

The Jeevan Reddy Committee, headed by Justice B.P. Jeevan Reddy and set up in 2005, reviewed the Armed Forces (Special Powers) Act and recommended repealing it, replacing it with a new law incorporating the Act's essential provisions. It matters for UPSC as the authoritative citation in the AFSPA debate between security imperatives and human rights.

Example: Its repeal recommendation invoked in every parliamentary and judicial discussion of AFSPA since.

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Jeremy Bentham

Jeremy Bentham (1748-1832) was an English philosopher and the founder of utilitarianism, the doctrine that actions are right when they maximise happiness and minimise suffering. His felicific calculus tried to measure pleasure and pain, making him the essay's spokesman for the measurable, outcome-based view of happiness. He anchors any essay on welfare, policy or the greatest happiness of the greatest number.

Example: Bentham's Introduction to the Principles of Morals and Legislation (1789), the founding text of utilitarianism.

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Jethro Tull's seed drill

Jethro Tull's seed drill was a horse-drawn machine invented by the English agriculturist Jethro Tull and patented in 1701. It sowed seeds in neat rows at uniform depth, unlike wasteful hand broadcasting, and greatly raised yields. Described in his Horse-Hoeing Husbandry of 1731, it matters for UPSC because it is a landmark of the Agricultural Revolution in Britain, the productivity breakthrough that preceded and supported the Industrial Revolution.

Example: The drill was patented in England in 1701.

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Jewish copper-plate grants

The Jewish copper-plate grants, also called the Cochin plates, are a charter dated to about 1000 CE issued by the Chera king Bhaskara Ravi Varman to the Jewish merchant Joseph Rabban at Kodungallur. They granted the rights of the Anjuvannam merchant guild and aristocratic privileges in perpetuity. They matter for UPSC because they are early evidence of India's Indian Ocean trade and of the state's tradition of granting religious minorities commercial rights.

Example: The plates are preserved in the Paradesi Synagogue at Mattancherry, Kochi.

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Jhansi under Rani Laxmibai

Jhansi under Rani Laxmibai refers to the role of Rani Lakshmibai of Jhansi in the Revolt of 1857. After the British annexed Jhansi in 1854 under the Doctrine of Lapse, refusing to recognise her adopted son Damodar Rao, she took up arms, defended Jhansi fort, and died fighting at Gwalior in June 1858. She matters for UPSC because she is the foremost symbol of women's participation in 1857 and of resistance to Dalhousie's annexation policy.

Example: She died at Gwalior in June 1858 while fighting British forces under Hugh Rose.

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Jharkhand

Jharkhand is a state in eastern India carved out of Bihar on 15 November 2000 under the Bihar Reorganisation Act, 2000. Its name means the land of forests, and it has a large tribal population including the Santhal, Oraon and Munda communities, with Ranchi as its capital. It matters for UPSC because it is a case study in state reorganisation on the basis of tribal identity and development, and in mineral-rich but poverty-affected regions.

Example: The state was formed on 15 November 2000, the birth anniversary of the tribal leader Birsa Munda.

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Jharkhand, Chhattisgarh, Uttarakhand

Jharkhand, Chhattisgarh and Uttarakhand are the three states created in November 2000: Chhattisgarh from Madhya Pradesh on 1 November, Uttarakhand, then called Uttaranchal, from Uttar Pradesh on 9 November, and Jharkhand from Bihar on 15 November. They were formed under the Vajpayee government through three Reorganisation Acts. They matter for UPSC because this was the second major redrawing of India's map after 1956, a key example of federal flexibility under Article 3.

Example: Chhattisgarh was the first of the three, inaugurated on 1 November 2000 with Raipur as its capital.

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Jiangxi Soviet

The Jiangxi Soviet is the communist base area in south-east China where the Chinese Soviet Republic was proclaimed at Ruijin in 1931, until Nationalist encirclement campaigns forced the Red Army into the Long March of 1934.

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JICA, the Japan International Cooperation Agency

JICA, the Japan International Cooperation Agency, is Japan's official development assistance agency, implementing grants, technical cooperation and concessional yen loans for developing countries. In India it has financed metro rail systems and the Mumbai-Ahmedabad High Speed Rail corridor. For UPSC, JICA exemplifies Japan's role in India's infrastructure development and the strategic depth of the India-Japan partnership in GS-2.

Example: JICA's concessional yen loan for the Mumbai-Ahmedabad High Speed Rail (bullet train) project.

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Jim Crow laws, segregation, and the Ku Klux Klan

Jim Crow laws were state and local statutes in the American South that enforced racial segregation from the late nineteenth century until the 1960s, while the Ku Klux Klan, founded in 1865, was a white-supremacist group that used terror to uphold that order. Together they defined the system of legalised racism after American slavery. They matter for UPSC because they are the standard world-history example of institutionalised discrimination, often compared with apartheid and caste exclusion.

Example: The US Civil Rights Act of 1964 outlawed segregation in public places, ending the Jim Crow era.

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Jinnah

Muhammad Ali Jinnah was the leader of the All-India Muslim League and the founder of Pakistan, revered there as the Quaid-i-Azam. Beginning as a Congress nationalist once called the ambassador of Hindu-Muslim unity, he later demanded a separate Muslim state through the two-nation theory. For UPSC, Jinnah is central to Partition, the Lahore Resolution and the transfer-of-power narrative.

Example: The League's Lahore Resolution of March 1940, which he piloted, first formally demanded independent Muslim states.

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jiva

Jiva is the living, sentient soul in Indian philosophy, especially Jainism, where it is held to be eternal and distinct from lifeless matter (ajiva). Jain doctrine classifies jivas by the number of senses, from single-sensed beings such as plants to five-sensed beings such as humans, grounding its ethic of non-violence. UPSC significance: GS-1 and GS-4 questions on Jain metaphysics and ethics.

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Jiyo Parsi

Jiyo Parsi is a central scheme launched in 2013 to arrest the decline of India's Parsi population, offering financial assistance for assisted reproductive treatments and running advocacy to encourage community growth. It matters for UPSC as a rare example of demographic policy targeted at a specific shrinking minority community.

Example: Government support for IVF treatment for Parsi couples under the scheme.

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jizya

Jizya is a per-capita tax levied in Islamic states on adult non-Muslim male subjects in return for state protection and exemption from military service. In India it was first imposed in Sindh after Muhammad bin Qasim's conquest and was later reimposed by Aurangzeb in 1679, becoming a symbol of religious policy. UPSC significance: GS-1 medieval history questions on Sultanate and Mughal administration.

Example: Aurangzeb's reimposition of jizya in 1679

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JNPT (Nhava Sheva)

JNPT is the Jawaharlal Nehru Port at Nhava Sheva near Mumbai, Maharashtra, India's largest container port and one of its major ports. Built to decongest Mumbai's docks, it handles containerised cargo, liquid bulk and general cargo through modern terminals, some run in public-private partnership. It matters for UPSC as the flagship of port-led development and trade logistics.

Example: Nhava Sheva handles over half of India's container cargo, making it the country's busiest container gateway.

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jobless growth

Jobless growth is a pattern in which GDP expands without a proportionate rise in employment, because growth is driven by capital-intensive sectors, automation or productivity gains rather than labour absorption. India's experience after liberalisation is the textbook illustration: fast GDP growth alongside stagnant organised-sector jobs and low employment elasticity. For UPSC it is a recurring economy question, linked to the informal sector, manufacturing's share of GDP and the debate over labour-intensive growth.

Example: India's 2000s, when GDP grew at roughly 8 percent while organised-sector employment barely moved.

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Jobless growth is

Jobless growth is an economic phase in which GDP grows rapidly without a matching rise in employment, because growth is capital-intensive or concentrated in low-employment sectors. India is often cited as an example, with fast growth in the 2000s alongside stagnant organised-sector jobs. It matters for UPSC because employment, not just GDP, is the test of development, and questions on inclusive growth, labour codes and demographic dividend all turn on this gap.

Example: India's rapid GDP growth in the 2000s coincided with stagnant organised-sector employment, the classic cited case of jobless growth.

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John Adams

John Adams was the second President of the United States, serving from 1797 to 1801, and a leading Founding Father of the American republic. His Federalist administration passed the Alien and Sedition Acts of 1798 and steered America through the Quasi-War with France without full-scale conflict. He matters for UPSC because the early American presidency is studied in comparative constitutionalism, especially executive power, federalism and civil liberties in wartime.

Example: The Alien and Sedition Acts of 1798, passed under Adams, criminalised criticism of the federal government.

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John Dewey

John Dewey (1859-1952) was an American philosopher of education who argued that learning happens by doing, and that schools should be miniature democracies forming active citizens. His pragmatism underlies activity-based learning and Nai Talim's work-centred schooling. He is the essayist's authority for education as lived experience rather than rote reception.

Example: Dewey's Democracy and Education (1916), arguing that education is life itself, not preparation for life.

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John Kay's flying shuttle (1733) and James Hargreaves's Spinning Jenny

John Kay's flying shuttle of 1733 and James Hargreaves's Spinning Jenny of 1764 were the two breakthrough textile inventions of the early Industrial Revolution in England. The shuttle doubled weaving speed, while the multi-spindle jenny multiplied yarn output, together shifting production from homes to factories. They matter for UPSC because they explain how mechanisation, factory labour and machine-breaking protests like Luddism began.

Example: Both inventions emerged in Lancashire, England, the centre of the cotton industry.

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John Locke

John Locke (1632 to 1704) was the English philosopher of the Two Treatises of Government who argued that government derives its legitimacy from the consent of the governed and exists to protect natural rights to life, liberty and property. He is the founding figure of liberalism and constitutional government. For UPSC, Locke underpins questions on fundamental rights, rule of law and democratic theory.

Example: His ideas shaped the American Declaration of Independence and modern bills of rights.

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John Marshall

Sir John Marshall was the Director-General of the Archaeological Survey of India from 1902 to 1928, the excavator whose tenure made Indian archaeology a scientific discipline. In 1924 he announced the discovery of the Indus Valley Civilisation, recognising Harappa and Mohenjo-daro as a Bronze Age urban culture. His excavations at Taxila, Sanchi and Sarnath set the field methods Indian archaeology still uses. He is not the American chief justice of the same name associated with judicial review; for UPSC, Marshall is GS-1 ancient history.

Example: Marshall's 1924 announcement of the discovery of the Indus Valley Civilisation

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John Nicholson

John Nicholson was a British brigadier-general of the East India Company, remembered as the Hero of Delhi in the Revolt of 1857. He led the decisive British assault during the Siege of Delhi and died of wounds on 23 September 1857 after storming the Kashmiri Gate. He matters for UPSC because the recapture of Delhi in September 1857 was the turning point of the revolt, and Nicholson personifies the British military response studied in 1857.

Example: He was fatally wounded while leading the storming of Delhi's Kashmiri Gate in September 1857.

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John Rawls

John Rawls was the American political philosopher whose A Theory of Justice of 1971 reshaped modern thinking on fairness. He proposed justice as fairness, derived from an original position behind a veil of ignorance, yielding two principles: equal basic liberties and the difference principle favouring the least advantaged. He matters for UPSC because his framework is the standard reference in GS Paper 4 ethics for justice, equality and the moral basis of welfare policies.

Example: A Theory of Justice (1971) introduced the veil of ignorance thought experiment.

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John Stuart Mill

John Stuart Mill was the English philosopher and economist whose On Liberty of 1859 set out the harm principle, limiting state interference to preventing harm to others. A utilitarian and advocate of representative government and women's rights, he also spent 35 years in the East India Company. He matters for UPSC because his ideas on liberty, free speech and utilitarianism are core to GS Paper 4 and political science.

Example: Mill worked in the East India Company from 1823 to 1858, ending as head of the examiner's office.

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John Sullivan

John Sullivan was the British civil servant, Collector of Coimbatore, who is credited as the founder of Ootacamund, now Udhagamandalam, in the Nilgiri Hills. He explored the hills in 1819, bought land from the Toda people, and built Stonehouse in 1822, the first European residence there. He matters for UPSC because Ooty became the summer capital of the Madras Presidency, a classic example of colonial hill stations and their administrative role.

Example: Stonehouse, built by Sullivan at Ooty in 1822, was the first European house in the Nilgiris.

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John Tyndall

John Tyndall (1820-1893) was an Irish physicist who provided the first experimental proof of the greenhouse effect. Beginning in January 1859, using a spectrophotometer he built himself, he showed that gases such as carbon dioxide and water vapour strongly absorb radiant heat (infrared radiation), while the atmosphere's main gases, oxygen and nitrogen, are nearly transparent to it. He concluded that changes in the amount of water vapour or carbon dioxide in the atmosphere could change the climate, laying the physical foundation of modern climate science.

Example: Tyndall's famous summary line from his 1861 Royal Society lecture was that the atmosphere admits the entrance of solar heat but checks its exit, tending to accumulate heat at the planet's surface.

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Joint Cipher Bureau (JCB)

The Joint Cipher Bureau is the tri-service signals-intelligence and cryptology organisation supporting the armed forces' secure communications and code-breaking. It matters as the military's cryptologic arm.

Example: JCB's role in secure military communications

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Joint Committee

A Joint Committee is an ad hoc parliamentary committee with members drawn from both the Lok Sabha and the Rajya Sabha, constituted for a specific task such as examining a bill. It matters for UPSC in the legislative-scrutiny framework, sitting between standing committees and select committees.

Example: A Joint Committee constituted to examine a contentious bill clause by clause before passage.

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Joint Doctrine for Cyberspace Operations

The Joint Doctrine for Cyberspace Operations, released by the Chief of Defence Staff, provides strategic guidance for military cyber operations, defining cyberspace as a warfighting domain alongside land, sea and air. It matters because it mainstreams cyber into operational planning.

Example: The CDS's doctrine on military operations in cyberspace

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Joint Doctrine for Multi-Domain Operations

The Joint Doctrine for Multi-Domain Operations, released by the Defence Minister on 27 August 2025, formalises integrated warfighting across land, sea, air, space, cyber and the electromagnetic spectrum. It matters as the doctrinal foundation for theatre commands and joint capability building.

Example: The 2025 doctrine guiding integrated tri-service operations

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joint family

The joint family is the traditional Indian household in which several generations, typically brothers and their families, live together under one roof, hold property in common and accept the authority of the eldest male, the karta. It provided social security, pooled labour and transmitted values before urbanisation and migration made the nuclear family dominant. For UPSC it is a GS-1 society topic, examined through urbanisation, women's changing roles and the legal recognition of the Hindu Undivided Family.

Example: The Hindu Undivided Family's recognition as a separate taxable entity under income-tax law.

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joint family and kinship system

The joint family and kinship system refers to the traditional Indian household in which several generations, related by blood and marriage, live together under one roof with common property and a shared kitchen. Kinship networks regulate marriage, inheritance, and social support, though urbanisation and migration are shifting families toward nuclear units. UPSC significance: GS-1 society (changing family structures).

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Joint Forest Management

Joint Forest Management is India's participatory forest governance model, formalised by a Government of India resolution in June 1990. Under it, village-level Joint Forest Management Committees protect and regenerate forests in partnership with the Forest Department, receiving usufruct rights such as fuelwood and fodder in return. It matters for UPSC because it is the flagship example of community-based natural resource management in environment and governance answers.

Example: The Arabari experiment in West Bengal in the early 1970s, led by forester A.K. Banerjee, was the pioneering model for JFM.

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Joint Forest Management (JFM)

Joint Forest Management is the participatory management of degraded forest lands by the forest department together with local communities, who protect the forest and share in its usufructs and benefits. It grew from the Arabari experiment in West Bengal and was formalised through 1990 guidelines.

Example: A village forest protection committee that guards a degraded patch and shares the harvested produce practises JFM.

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Joint Implementation

Joint Implementation is one of the three flexible market mechanisms of the Kyoto Protocol, set out in its Article 6. It allows a developed (Annex I) country to earn emission reduction units by investing in projects that cut greenhouse gas emissions in another developed country, and to count those cuts toward its own binding target. Because it operates only between countries that both have emission caps, it spreads the cheapest emission reductions across the developed world. It was one of the earliest formal carbon offset systems, alongside the Clean Development Mechanism and emissions trading.

Example: Under Joint Implementation, a Western European country could finance an energy-efficiency upgrade at a district heating plant in Eastern Europe and claim the resulting emission reductions against its Kyoto Protocol target.

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joint operation

A joint operation is a military action conducted by two or more services of the armed forces, or by India together with a partner country, under a unified command. It demands inter-service coordination of air, land, and naval assets and features in India's defence doctrine through theatre commands. UPSC significance: GS-3 internal security and defence (military modernisation).

Example: the joint Army-Air Force campaign in the 1999 Kargil conflict

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Joint Parliamentary Committee

The Joint Parliamentary Committee is an ad hoc parliamentary committee with members from both the Lok Sabha and the Rajya Sabha, constituted by a parliamentary motion to inquire into a specific subject, usually a bill or a major controversy. Its recommendations are advisory rather than binding.

Example: the JPC on the 2G spectrum allocation (2011) and the JPC on the Waqf (Amendment) Bill, 2024

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Joint Select Committee

A Joint Select Committee is a parliamentary committee with members drawn from both the Lok Sabha and the Rajya Sabha, constituted to examine a bill or subject in depth and report back to Parliament. It allows both Houses to scrutinise complex or contentious legislation together. It matters for UPSC because committee scrutiny is a key stage of the legislative process, frequently tested in polity questions on how Parliament examines bills.

Example: The Joint Select Committee on Indian Constitutional Reform (1933 to 1934), chaired by Lord Linlithgow, produced the report that shaped the Government of India Act, 1935.

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joint sitting

A joint sitting is the deadlock-breaker under Article 108: if a bill is rejected or left pending by the other House for six months, the President may summon both Houses together and the bill is decided by majority of members present and voting. It is barred for Money Bills and constitutional amendments. Used only thrice, in 1961, 1978 and 2002, it structurally favours the larger Lok Sabha and measures the Rajya Sabha's limited veto.

Example: The 2002 joint sitting that passed the Prevention of Terrorism Act (POTA).

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Joint-stock company

A joint-stock company is a business owned by shareholders who pool capital in transferable shares, limiting their loss to their investment. The English and Dutch East India Companies turned the form into an instrument of empire: private capital armed with state charters.

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Jomo Kenyatta

Jomo Kenyatta was the Kenyan nationalist leader, called Mzee, who became the first President of Kenya. Imprisoned by the British during the Mau Mau emergency of the 1950s, he led Kenya to independence in December 1963 and to republic status in 1964. He matters for UPSC because his career is a textbook case of African decolonisation, studied alongside Nkrumah and Nyerere in world history.

Example: Kenya gained independence under his leadership on 12 December 1963.

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Jonathan Duncan's Sanskrit College at Benares

Jonathan Duncan's Sanskrit College at Benares was founded in 1791 by Jonathan Duncan, the British Resident at Benares, to promote the study of Sanskrit literature and Hindu law. It was meant to train scholars who could help the administration understand Hindu legal texts. It matters for UPSC because it represents the Orientalist phase of colonial education policy, preceding Macaulay's 1835 Minute, and it later became the Sampurnanand Sanskrit Vishwavidyalaya.

Example: The college evolved into the Sampurnanand Sanskrit Vishwavidyalaya at Varanasi.

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Jorwe (Maharashtra)

The key names the Jorwe culture, a Chalcolithic culture of Maharashtra dated to about 1400 to 700 BCE, identified from its type site of Jorwe in Ahmednagar district. Its people lived in large villages, practised agriculture, and made distinctive painted pottery in black on red. It matters for UPSC because Jorwe is the classic Deccan Chalcolithic culture, tested in ancient history alongside Harappan and other regional Chalcolithic sites.

Example: The type site of Jorwe lies in Ahmednagar district of Maharashtra.

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Joseph Fourier

Joseph Fourier (1768-1830) was a French mathematician and physicist who first described what we now call the greenhouse effect. In papers published in the 1820s, he calculated that the Earth, given its distance from the Sun, should be far colder than it actually is, and proposed that the atmosphere acts like a covering that lets sunlight in but traps outgoing heat. He did not know which gases were responsible, a gap filled decades later by John Tyndall, but his insight gave climate science its founding idea.

Example: Fourier estimated that without the atmosphere's warming influence, the Earth's surface would be tens of degrees colder, a calculation that framed every later study of the greenhouse effect.

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Joseph Nye (1990)

Joseph Nye (1990) is the American political scientist who coined soft power in his 1990 book Bound to Lead, arguing that a country can get what it wants through attraction rather than coercion or payment. His hard, soft and smart power triad is the standard vocabulary for essays on diplomacy, culture and influence. He is the modern theorist the essay article pairs with Kautilya and Gramsci.

Example: Nye's 1990 coining of soft power as attraction rather than coercion.

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Joseph Shine

Joseph Shine was the petitioner, an Indian resident in Italy, whose public interest litigation led to the Supreme Court's 2018 verdict striking down the adultery law. In Joseph Shine v. Union of India, decided on 27 September 2018, a five-judge bench unanimously held Section 497 of the IPC unconstitutional. He matters for UPSC because the case is a landmark on gender equality and personal liberty under Articles 14, 15 and 21.

Example: The Supreme Court delivered its unanimous judgment in his case on 27 September 2018.

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Joseph Shine v. Union of India (2018) is

The key names Joseph Shine v. Union of India, the 2018 Supreme Court judgment that struck down Section 497 of the IPC, which criminalised adultery. A bench headed by Chief Justice Dipak Misra held the provision violated Articles 14, 15 and 21, since it treated the wife as her husband's property. Adultery remains a ground for divorce but is no longer a crime. It matters for UPSC as a landmark on gender justice and the right to dignity and privacy.

Example: The judgment was delivered on 27 September 2018, decriminalising adultery in India.

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Joshimath

Joshimath is the Uttarakhand Himalayan town that became the national symbol of land subsidence after large cracks appeared in buildings and roads in January 2023. Built on an old landslide deposit, it sank due to a mix of natural fragility, construction load and tunnelling.

Example: the Joshimath crisis led to evacuations and a national debate on Himalayan development

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Joshimath land subsidence

Joshimath land subsidence is the sinking of the Uttarakhand town that cracked hundreds of buildings in January 2023, caused by construction on an old landslide mass, overloaded infrastructure and tunnelling for the Tapovan-Vishnugad project. The response included evacuation and compensation.

Example: the crisis forced a national rethink of carrying capacity in Himalayan towns

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JP movement

The JP movement is the 1974-75 anti-corruption agitation led by Jayaprakash Narayan, who gave the call for Sampoorna Kranti, or Total Revolution, to transform politics, society and the economy. Beginning with student protests in Bihar and Gujarat against price rise and misrule, it mobilised the opposition and triggered Indira Gandhi's Emergency of 1975. It matters for UPSC as a landmark of extra-parliamentary democratic assertion.

Example: The Bihar students' agitation of 1974 that brought JP out of retirement and snowballed into a national movement.

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JSY

JSY is the Janani Suraksha Yojana, a 2005 conditional cash-transfer scheme under the National Health Mission that pays women to deliver in health institutions, with ASHA workers as the link between households and facilities. It drove a sharp rise in institutional deliveries. It matters for UPSC as a landmark in maternal-health policy and incentive-based behaviour change.

Example: ASHA-facilitated institutional deliveries credited with bringing down maternal mortality.

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Judicial Appointments Commission

The Judicial Appointments Commission refers to the National Judicial Appointments Commission (NJAC), created by the 99th Constitutional Amendment in 2014 to replace the collegium system for appointing judges. The Supreme Court struck it down in 2015 as violating judicial independence and the basic structure. It matters for UPSC on separation of powers and the basic structure doctrine.

Example: The Fourth Judges case of 2015 invalidating the NJAC and restoring the collegium.

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Judicial delays and low conviction rates

Judicial delays and low conviction rates are two chronic ailments of India's criminal justice system. Crores of cases remain pending for years, undertrial prisoners languish in jails, and weak investigations and hostile witnesses keep conviction rates modest. For UPSC, the theme underpins GS-2 answers on judicial reforms, fast-track courts, e-courts, and the shift to the Bharatiya Nagarik Suraksha Sanhita.

Example: the Supreme Court's recurring directions granting bail to undertrial prisoners jailed for more than half the maximum sentence for the offence

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judicial discipline

Judicial discipline is the restraint the judiciary owes the Constitution and precedent: judges must decide within the text's commitments and follow higher courts' law rather than personal preference. In the Article 21 debate it counterweights the provision's open texture, insisting newly discovered rights be traceable to constitutional promises, not invented from silences. It also names lower courts' duty under Article 141 to obey Supreme Court precedent, keeping the system coherent.

Example: High Courts and district courts bound by the Supreme Court's declarations of law under Article 141.

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judicial members

Judicial members are the members of a tribunal bench drawn from the judiciary, usually retired judges, who sit alongside technical or expert members bringing domain knowledge. In the GST Appellate Tribunal, for example, benches combine judicial members with technical members nominated by the Centre and the States, reflecting GST's shared sovereignty. The design blends legal rigour with subject expertise, and tribunal-reform litigation has repeatedly tested whether judicial members enjoy primacy and secure tenure.

Example: GSTAT benches pairing judicial members with technical members from the Centre and the States.

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judicial pendency

Judicial pendency is the backlog of unresolved cases in Indian courts, stretching from district courts to the Supreme Court. Caused by judge vacancies, procedural delays, and low judge-to-population ratios, it delays justice and raises litigation costs, prompting reforms such as e-courts and alternative dispute resolution. UPSC significance: GS-2 polity questions on judicial reforms.

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Judicial Plan of 1772

The Judicial Plan of 1772 was Warren Hastings' reorganisation of justice in Bengal after the Company took the Diwani. Each district received a Diwani Adalat for civil cases and a Faujdari Adalat for criminal cases under the Collector, with the Sadar Diwani Adalat and Sadar Nizamat Adalat at Calcutta as appellate courts. It matters for UPSC because it marks the beginning of a formal Anglo-Indian judicial system, separating civil and criminal jurisdiction.

Example: The plan established the Sadar Diwani Adalat at Calcutta as the highest civil court in Bengal.

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judicial review

Judicial review is the courts' power to invalidate executive and legislative acts that violate the Constitution, drawn from Articles 13, 32, 141, 142, 226 and 227. The Supreme Court has held it part of the basic structure, beyond even constitutional amendment, as affirmed in Minerva Mills (1980). It makes the judiciary the Constitution's guardian and the final arbiter of Union-State disputes, and it is the doctrinal home of landmark invalidations from Golaknath to the NJAC verdict of 2015.

Example: Minerva Mills v. Union of India (1980), which held judicial review part of the basic structure.

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Jugantar

Jugantar is the name of both a revolutionary Bengali weekly (1906) founded by Barindra Kumar Ghosh and Bhupendranath Dutta, and the secret society that grew around it. Preaching armed revolt against British rule, it became the nucleus of Bengal's revolutionary movement. For UPSC, it is the bridge between the Swadeshi press and the Alipore Bomb conspiracy in GS-1 modern history.

Example: the Alipore Bomb Case (1908-09), in which Jugantar revolutionaries including Aurobindo Ghosh were tried after the Muzaffarpur attempt on Kingsford

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Julaha (weaver)

Julaha is the traditional Muslim weaver community of North India, organised around the handloom trade. The term is most famous in UPSC contexts because the Bhakti saint Kabir was born into a Julaha family, and weaver imagery runs through his dohas. It illustrates how the Bhakti movement drew its saints and its metaphors from artisan castes rather than the priestly elite.

Example: Kabir, the 15th-century Varanasi weaver-saint whose verses use the loom and thread as spiritual metaphors

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July Crisis of 1914

The July Crisis of 1914 is the month-long chain of ultimatums, mobilisations and miscalculations that turned the assassination of Archduke Franz Ferdinand at Sarajevo (28 June 1914) into the First World War. Austria-Hungary's harsh ultimatum to Serbia, backed by Germany's blank cheque, triggered a cascade of alliances. For UPSC, it is the classic GS-1 case study of how alliance systems convert a local spark into a global war.

Example: Austria-Hungary's ultimatum to Serbia of 23 July 1914, whose rejection led to the declaration of war on 28 July

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Junagadh

Junagadh was a princely state in Kathiawar whose Muslim Nawab acceded to Pakistan in September 1947 despite a Hindu-majority population. After the Nawab fled to Karachi, India took over the administration and held a plebiscite in February 1948, in which an overwhelming majority voted for India. For UPSC, it is the textbook GS-2 example of popular will legitimising the integration of princely states.

Example: the February 1948 plebiscite, in which over 99 per cent of voters chose accession to India

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Junagadh inscription

The Junagadh inscription is the Sanskrit rock inscription of the Western Kshatrapa ruler Rudradaman I, dated to about 150 CE on the Girnar hill rock near Junagadh, Gujarat. Written in polished prose in Brahmi script, it is the earliest known long inscription in classical Sanskrit and records the repair of the Sudarshan Lake, originally built under the Mauryas. It matters because its language, script and public-works content are classic UPSC ancient-history prelims fodder.

Example: repair of Sudarshan Lake recorded c. 150 CE

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Junagadh rock inscription

The Junagadh rock inscription is a rock face at Girnar in Gujarat carrying three layers of Indian epigraphy: Ashoka's fourteen major rock edicts in Prakrit and Brahmi, Rudradaman I's Sanskrit prashasti of about 150 CE recording the repair of the Sudarshana lake, and a later Gupta inscription of Skandagupta. For UPSC, Rudradaman's record is the first long Sanskrit royal inscription, marking the shift from Prakrit to Sanskrit in courtly epigraphy.

Example: Rudradaman I's account of the Sudarshana lake being repaired by his governor Suvisakha

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Junagarh inscription

The Junagadh (Girnar) rock inscription of Rudradaman I, dated around 150 CE, is the first major long inscription in classical Sanskrit, composed in elegant kavya style. It records the history of the Sudarshana lake in Saurashtra: built under Chandragupta Maurya, improved under Ashoka, and repaired by Rudradaman after a storm breached its embankments. For UPSC, it marks Sanskrit's emergence as a language of royal record.

Example: Its account of Rudradaman financing the lake's repair without taxing his subjects is cited as a model of ancient public works.

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Junaid's

Junaid's refers to Junayd ibn Abd al-Rahman al-Murri, the Umayyad governor of Sind (circa 723-726), who pushed Arab campaigns eastward into Gujarat, Rajasthan and Malwa after the conquest of Sind. His raids were eventually checked by Indian rulers such as Nagabhata I of the Gurjara-Pratiharas. For UPSC, the episode explains the standard answer that the Pratiharas acted as a bulwark against Arab expansion into India.

Example: the defeat of Arab forces by the Chalukya general Avanijanashraya Pulakeshin at Navsari (738-39), which halted the advance into the Deccan

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Junnar

Junnar is an ancient town in Maharashtra's Pune district, associated with the early Satavahanas, for whom it served as an early capital. Its hills hold important Hinayana Buddhist rock-cut caves at Lenyadri, Manmodi and Tulja, and it sat on trade routes linking the Deccan to western ports. For UPSC, it is a key GS-1 art-and-culture site connecting Satavahana political history with early Buddhist cave architecture.

Example: the Lenyadri group of Buddhist caves, one of which later became the Ashtavinayaka Girijatmaka temple

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Juno mission

The Juno mission is NASA's New Frontiers spacecraft studying Jupiter, launched in 2011 and placed in a polar orbit around the planet in July 2016. It maps Jupiter's gravity and magnetic fields, probes the composition and depth of its atmosphere, and images its poles with JunoCam. For UPSC science and technology, it exemplifies long-duration planetary missions that test theories of giant-planet and solar-system formation.

Example: JunoCam's close-up images of Jupiter's Great Red Spot and its extended flybys of the moons Europa, Ganymede and Io

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Jus ad Bellum

Jus ad bellum is the branch of just war theory setting the conditions under which going to war is morally and legally justified: just cause, right authority, right intention, last resort, reasonable prospect of success and proportionality. Rooted in Augustine, Aquinas and Grotius, it underpins modern international humanitarian law. For UPSC, it frames GS-2 and GS-4 answers on the ethics of intervention, self-defence and pre-emptive strikes.

Example: the UN Charter's rule that force is lawful only in self-defence under Article 51 or with Security Council authorisation, which codifies jus ad bellum criteria

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Jus in Bello

Jus in bello is the branch of just-war theory governing right conduct during war: how force may be used once fighting has begun. Its core principles are distinction between combatants and civilians, proportionality of force, and military necessity. For UPSC, it frames questions on international humanitarian law, war crimes and India's positions in global conflicts.

Example: The Geneva Conventions of 1949 codified jus in bello, protecting prisoners of war and civilians.

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Jus post Bellum

Jus post bellum is the least developed branch of just war theory, dealing with justice after war ends: fair and non-vindictive peace settlements, accountability for war crimes, reconstruction, and the rights of occupied or defeated populations. Thinkers like Brian Orend argue a just peace is part of a just war. For UPSC, it enriches GS-4 answers on post-conflict reconciliation and transitional justice.

Example: the Nuremberg Trials of 1945-46, which punished Nazi leaders for war crimes and crimes against humanity

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just transition

A just transition is the principle that the shift from a carbon-intensive economy to a green economy must be fair to the workers and communities that depend on fossil fuel industries. It means that decarbonisation policies should come with reskilling, social protection, new livelihoods and economic diversification for coal miners, power plant workers and their towns, so no one is left jobless by climate action. The idea is endorsed by the International Labour Organization and the 2018 Silesia Declaration at COP24.

Example: When coal mines or thermal plants close to meet climate targets, a just transition approach would retrain the affected miners for solar or manufacturing jobs and fund alternative local industries, rather than simply shutting the mine.

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Just war theory

Just war theory is the Western ethical tradition, running from Cicero through Augustine, Aquinas and Grotius, that judges when war may be started (jus ad bellum), how it must be fought (jus in bello) and how peace must be made (jus post bellum). It reconciles moral limits with the reality of armed conflict. For UPSC, it is the standard GS-4 framework for questions on the morality of war, terrorism and humanitarian intervention.

Example: the Geneva Conventions of 1949, which codify jus in bello principles such as the protection of civilians and prisoners of war

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justice

Justice is the ideal of fair treatment and the equitable distribution of rights, opportunities, and burdens. The Indian Constitution's Preamble promises social, economic, and political justice, which the courts have elaborated through public interest litigation and due-process jurisprudence. UPSC significance: GS-2 (constitutional philosophy) and GS-4 (ethical foundations of governance).

Example: the Preamble of the Indian Constitution (1949)

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Justice A.G. Masih

Justice A.G. Masih is Justice Augustine George Masih, a judge of the Supreme Court of India appointed in November 2023, previously Chief Justice of the Rajasthan High Court. He matters for current-affairs-based UPSC preparation as part of the present Supreme Court bench strength deciding major constitutional cases.

Example: Sitting with Chief Justice B.R. Gavai on the 2025 bench that issued the interim order on the Waqf (Amendment) Act.

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Justice Amitava Roy Committee

The Justice Amitava Roy Committee is a three-member panel the Supreme Court appointed in 2018 to examine prison administration, following the Inhuman Conditions in 1382 Prisons judgment. Headed by retired judge Amitava Roy, it submitted five reports on overcrowding, women inmates and death-row prisoners. Key recommendations include one lawyer for every 30 prisoners, a free phone call for new inmates, fast-track courts for petty offences and ending solitary confinement of death-row convicts. It anchors questions on prison reform in GS-2.

Example: its reports, made public in 2024, called solitary confinement of death-row convicts a most egregious violation

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Justice and fairness

Justice and fairness are related but distinct ethical ideas: justice concerns the right ordering of institutions and the distribution of rights, duties and benefits, while fairness concerns impartial, non-arbitrary treatment in procedures and outcomes. John Rawls' theory of justice as fairness ties them together. For UPSC, the distinction is a standard GS-4 prompt for discussing whether a lawful decision can still be unfair.

Example: Rawls' difference principle, which permits economic inequalities only when they improve the position of the least advantaged

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Justice argument

The justice argument is the ethical case in climate negotiations that countries which industrialised early and emitted the most greenhouse gases historically bear the greatest responsibility for global warming. It holds that developed countries should therefore lead in cutting emissions and should provide finance and technology to developing countries, which contributed least to the problem but face its worst impacts. This argument is the moral basis of the principle of common but differentiated responsibilities enshrined in the UN Framework Convention on Climate Change.

Example: India and other developing countries have long invoked the justice argument to demand that developed nations deliver the promised climate finance, pointing to the developed world's far larger cumulative historical emissions.

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Justice Fazl Ali

Justice Fazl Ali was a judge of the Federal Court and the Supreme Court, remembered chiefly as chairman of the States Reorganisation Commission (1953-55), set up after the death of Potti Sriramulu intensified the demand for linguistic states. The Commission's 1955 report broadly accepted language as the basis of reorganisation, with safeguards for minorities. For UPSC, it is the institutional origin of the States Reorganisation Act, 1956, a staple of GS-2 federalism answers.

Example: the Commission's 1955 report recommending linguistic states, which led directly to the States Reorganisation Act of 1956

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Justice H.R. Khanna

Justice H.R. Khanna was a Supreme Court judge famed for his lone dissent in ADM Jabalpur (1976), holding that the right to life and liberty cannot be suspended even during the Emergency. The majority had upheld the suspension of habeas corpus; his dissent was later vindicated and is celebrated as a landmark of judicial courage. Superseded for Chief Justice of India in 1977, he resigned in protest. UPSC invokes him in questions on judicial independence, the Emergency and Article 21.

Example: the Supreme Court's 2017 Puttaswamy judgment expressly overruled ADM Jabalpur, vindicating his dissent

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Justice J. S. Verma Committee (2013)

The Justice J. S. Verma Committee (2013) was the three-member panel set up after the 2012 Nirbhaya gang rape, which recommended sweeping reforms in sexual-assault law, policing and education within 29 days. Its report led to the Criminal Law (Amendment) Act, 2013. It is the essay's model of crisis-driven institutional reform.

Example: The Verma Committee's 2013 report reshaping India's sexual-assault laws after the Nirbhaya case.

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Justice J.C. Shah

Justice J.C. Shah was a former Chief Justice of India who headed the Shah Commission, appointed in 1977 to inquire into excesses committed during the Emergency of 1975-77. The Commission documented misuse of the Maintenance of Internal Security Act, forced sterilisations, press censorship and arbitrary detentions, and its reports remain the most authoritative official record of Emergency-era abuses. UPSC uses the Shah Commission in questions on the Emergency, preventive detention laws and the need for institutional safeguards against executive overreach.

Example: its findings underpin textbook accounts of why the 44th Amendment curtailed Emergency powers

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Justice Jeevan Reddy Committee (2005)

The Justice Jeevan Reddy Committee, set up in 2004, recommended repealing AFSPA in 2005 and folding its necessary provisions into UAPA, finding the Act a symbol of hate and high-handedness. Successive governments did not implement it. It matters as the most authoritative official call for AFSPA's repeal.

Example: The 2005 report recommending AFSPA's repeal

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Justice K.S. Puttaswamy v. Union of India

Justice K.S. Puttaswamy v. Union of India is the 2017 nine-judge-bench Supreme Court judgment that declared the right to privacy a fundamental right under Article 21, overruling the earlier M.P. Sharma and Kharak Singh decisions. It laid down the tests of legality, legitimate aim and proportionality for state intrusion. For UPSC, it is the foundation of GS-2 answers on data protection, Aadhaar and informational privacy.

Example: the Supreme Court's 2018 Aadhaar judgment, which upheld the scheme but struck down mandatory linking of Aadhaar with bank accounts and mobile numbers by applying Puttaswamy's proportionality test

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Justice Party

The Justice Party was the popular name of the South Indian Liberal Federation, founded in 1916 in Madras by C. Natesa Mudaliar, T.M. Nair and P. Theagaraya Chetty to advance non-Brahmin interests. It demanded communal representation, won the 1920 elections under dyarchy, and issued the first communal Government Orders reserving posts for non-Brahmins. For UPSC, it is the institutional root of the Dravidian movement in GS-1 modern history.

Example: the Madras government's 1921 Communal Government Order reserving public posts for non-Brahmin communities

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Justice Rajinder Sachar

Justice Rajinder Sachar was a former Delhi High Court Chief Justice who chaired the 2006 Prime Minister's High Level Committee on the social, economic and educational status of Muslims in India, known as the Sachar Committee Report. It found the community lagging on literacy, employment and credit access, and recommended an Equal Opportunity Commission and targeted development. The report reshaped minority-welfare discourse and is a staple reference in GS-1 and GS-2 questions on social justice.

Example: the report's data is routinely cited in debates on the 15-Point Programme for minorities

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Justice versus mercy

Justice versus mercy is the classic ethical tension between giving each person their strict due under law and tempering punishment with compassion for circumstances. Portia's courtroom speech in The Merchant of Venice is the literary touchstone, while constitutional clemency powers embody it in law. For UPSC, the theme appears in GS-4 questions on punishment, the death penalty and the moral limits of retribution.

Example: the President's and Governors' pardon powers under Articles 72 and 161, and the Supreme Court's commutation of death sentences after inordinate delay in deciding mercy petitions (Shatrughan Chauhan, 2014)

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Justice: social, economic and political

Justice: social, economic and political is the Preamble's threefold promise, securing to all citizens equality of status and opportunity across caste, class and citizenship. It is operationalised through fundamental rights, directive principles and affirmative action. For UPSC, it is the master key for GS-2 answers: any question on reservations, welfare schemes or democratic deepening can be structured around these three dimensions.

Example: MGNREGA (2005), which guarantees 100 days of wage employment a year to rural households as a legal right, advancing economic justice

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Justices J.B. Pardiwala and R. Mahadevan

Justices J.B. Pardiwala and R. Mahadevan are Supreme Court judges who, as a division bench, decided UPP Tollways v. MPRDC on 30 July 2025. The bench held that safe, well-maintained and motorable roads are part of the right to life under Article 21, and that the State's duty to maintain roads cannot be delegated away even when private concessionaires operate them. The ruling expanded Article 21 jurisprudence and is current-affairs material for GS-2 questions on fundamental rights and state accountability.

Example: the judgment, authored by Justice Mahadevan, was delivered while dismissing the concessionaire's challenge to the MP Arbitration Tribunal's exclusive jurisdiction

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Justices P.N. Bhagwati and V.R. Krishna Iyer

Justices P.N. Bhagwati and V.R. Krishna Iyer were Supreme Court judges of the late 1970s who pioneered Public Interest Litigation in India. They relaxed locus standi so that any public-spirited citizen could approach the court for the poor and voiceless, and expanded Article 21 into a charter of dignity covering speedy trial, legal aid and humane prison conditions. Their partnership reshaped the Court into an instrument of social justice, and UPSC treats PIL's origins as essential GS-2 and GS-4 material.

Example: their 1979 Hussainara Khatoon orders freeing undertrial prisoners are the classic illustration of PIL in action

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jute

Jute is a long, soft plant fibre called the 'golden fibre', used for sacks, bags, and packaging. It is a kharif crop needing hot, humid conditions and alluvial soil, with India among the world's largest producers and West Bengal the leading state. UPSC significance: GS-1 geography (commercial crops) and GS-3 economy (agro-based industries).

Example: West Bengal, India's largest jute-producing state

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Jute Corporation of India

The Jute Corporation of India is a public sector undertaking under the Ministry of Textiles, set up in 1971 and headquartered in Kolkata. It procures raw jute from farmers at the minimum support price fixed each year, stabilising prices and supplying mills. For UPSC, it is the standard GS-3 illustration of price-support institutions in agricultural marketing, alongside the Food Corporation of India and NAFED.

Example: the Corporation's MSP-based procurement of raw jute in West Bengal and Assam during the jute marketing season

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Jute Corporation of India (JCI)

The Jute Corporation of India is the 1971 public-sector body that undertakes MSP procurement of raw jute and stabilises the jute market. It buys from farmers when prices fall below MSP, supporting the Golden Fibre economy of West Bengal and Assam. For UPSC it is the price-support agency for natural fibres.

Example: JCI's MSP purchases during a jute-price crash protect Bengal's jute farmers from distress sales.

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Juvenile Justice (Care and Protection of Children) Act, 2015

The Juvenile Justice (Care and Protection of Children) Act, 2015 replaced the 2000 Act and created two tracks: children in conflict with law and children in need of care and protection. Its most debated provision lets 16 to 18 year olds accused of heinous offences be tried as adults after a Juvenile Justice Board assessment. For UPSC, it is central to GS-2 answers on child rights, balancing reformative justice with public safety.

Example: the Act's passage in 2015 following the national debate after the 2012 Delhi gangrape case, in which one accused was a juvenile

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Juvenile Justice Act 2015

The Juvenile Justice Act 2015 is shorthand for the Juvenile Justice (Care and Protection of Children) Act, 2015, India's principal law for children in conflict with law and those needing care and protection. It created Juvenile Justice Boards and Child Welfare Committees, and controversially allowed 16 to 18 year olds accused of heinous offences to be tried as adults after assessment. UPSC examines it under child rights, criminal justice reform and the UN Convention on the Rights of the Child.

Example: the 2021 amendments transferred adoption-related powers of Child Welfare Committees to District Magistrates

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Juvenile Justice Boards

Juvenile Justice Boards are district-level quasi-judicial bodies set up under the Juvenile Justice (Care and Protection of Children) Act, 2015 to handle cases of children in conflict with law. Each Board comprises a Metropolitan or Judicial Magistrate and two social workers, at least one a woman, and decides whether a child needs counselling, community service or institutional care rather than punishment. They embody the reformative philosophy of juvenile justice and appear in UPSC questions on child rights and criminal justice.

Example: a Board's preliminary assessment decides whether a 16 to 18 year old accused of a heinous offence is tried as an adult

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JVP Committee

The JVP Committee was the Congress-appointed panel of Jawaharlal Nehru, Vallabhbhai Patel and Pattabhi Sitaramayya that examined linguistic reorganisation of provinces in 1948-49. Reporting on 1 April 1949, it said the time was not suitable for new linguistic provinces, though it conceded that if public sentiment was insistent and overwhelming, democrats must yield. It matters for UPSC as the pivot between the Dhar Commission and the States Reorganisation Commission.

Example: Potti Sriramulu's 1952 fast unto death, which forced the creation of Andhra in 1953 as the first linguistic state.

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JWST

The James Webb Space Telescope, the world's premier infrared space observatory, launched on 25 December 2021 and stationed at the Sun-Earth Lagrange point L2, about 1.5 million kilometres from Earth. With its 6.5-metre gold-coated segmented mirror, it observes the earliest galaxies, exoplanet atmospheres and star formation in infrared light, far beyond the reach of the Hubble Space Telescope.

Example: JWST's infrared observations have revealed some of the earliest galaxies formed after the Big Bang.

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Jyeshthaka

Jyeshthaka, also rendered jetthaka in Pali sources, was the head of a shreni or guild in ancient and early medieval India. Buddhist literature such as the Jatakas describes him as an experienced member who chaired the guild, disciplined members and represented the craft before the king. For UPSC, the term is a one-mark staple in ancient-economy questions on guild organisation, banking and corporate life.

Example: the Jataka references to the jetthaka of the carpenters and the garland-makers, illustrating guild hierarchy by occupation

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Jyotirao Phule (1827-1890)

Jyotirao Phule (1827-1890) was the Maharashtra social reformer who attacked caste hierarchy and Brahmanical dominance from a Shudra standpoint. With his wife Savitribai, he opened schools for girls and lower castes in Pune, founded the Satyashodhak Samaj in 1873 to mobilise the bahujan samaj, and wrote Gulamgiri. For UPSC, he anchors GS-1 answers on nineteenth-century social reform alongside the Arya Samaj and the Brahmo Samaj.

Example: the first school for girls opened in Pune in 1848, run by Savitribai Phule

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