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ChemistryJEE Main 6 Apr 2026, Shift 2·Q15·MCQ·Moderate

Hydrocarbons · Elimination and alkyne hydration

An optically active alkyl bromide CX4HX9Br\ce{C4H9Br}, reacts with ethanolic KOH to form major compound [A] which reacts with bromine to give compound [B]. Compound [B] reacts with ethanolic KOH and sodamide to give compound [C]. One molecule of water adds to compound [C] on warming with mercuric sulphate and dilute sulphuric acid at 333 K to form compound [D]. The functional group in compound D will be confirmed by:
  1. (1)Haloform test
  2. (2)Lucas test
  3. (3)Silver mirror test
  4. (4)Benedict test

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See the full 6 Apr 2026, Shift 2 paper