Thursday, 8 October 2026 · New Delhi
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Chemistry for prelims: matter, reactions and the compounds in everyday life
The chemistry prelims keeps testing: the universal solvent, physical vs chemical change, aspartame, blood pH, mercury vapour lamps, lightest and densest metals, TNT and RDX, methane in mines, and corundum gemstones. Complete definitions, quick tables and 10 practice MCQs.
30 September 2026 · 10 min read
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