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Chemistry · Aldehydes and Ketones

JEE Main 2026 — 6 April, Evening Shift — Question 58

An optically active alkyl bromide C4H9Br\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}, 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. Option A:

    Haloform test

    Correct
  2. Option B:

    Lucas test

  3. Option C:

    Silver mirror test

  4. Option D:

    Benedict test

Answer: A

Step-by-step solution

Final product gives +ve haloform test

Solution figure

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
6 April, Evening Shift
Subject
Chemistry
Chapter
Aldehydes and Ketones
Topic
Physical properties, Uses and Tests for Carbonyl Compound

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An optically active alkyl bromide C 4 H 9 Br , reacts with ethanolic… | JEE Main 2026 PYQ with Solution · DhiX AI