Chemistry · Aldehydes and Ketones

JEE Main 2026 — 28 January, Morning Shift — Question 50

Given below are the four isomeric compounds (P, Q, R, S)

Identify correct statements from below.

A. Q, $R$ and $S$ will give precipitate with 2, 4 - DNP.

B. P and Q will give positive Bayer's test. C. Q and R will give sooty flame.

D. R and S will give yellow precipitate with $\mathrm{I}_{2} / \mathrm{NaOH}$ .

E. Q alone will deposit silver with Tollen's reagent

Choose the correct option.

Option A:
A, C and E only
Correct
Option B:
A and E only
Option C:
C and E only
Option D:
A, B, D and E only

Answer: A

Step-by-step solution

(A) $\mathrm{Q}, \mathrm{R}, \mathrm{S}$ all three give 2, 4 DNP test as they have Aldehyde/ketone group (C) Q & R gives sooty flame (E) Q gives Tollens reagent test

Answer key and solution verified before publishing.

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Exam: JEE Main 2026
Paper: 28 January, Morning Shift
Subject: Chemistry
Chapter: Aldehydes and Ketones
Topic: Physical properties, Uses and Tests for Carbonyl Compound