JEE Main 2023ChemistryAldehydes and KetonesHardMCQ

JEE Main 2023 — Aldehydes and Ketones Question with Solution

JEE Main 2023 (13 Apr Shift 1)

Question

D-(+)-Glyceraldehyde→ii)H2O/H+iii)HNO3i)HCN

The products formed in the above reaction are

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Show full solutionCorrect option: A
Correct answer
A

One optically active and one meso product

Step-by-step explanation

The aldehyde group of glyceraldehyde reacts with hydrogen cyanide give cyanohydrin. Two isomers formed in the above step, because aldehyde is planar and changed to tetrahedral centre. On hydrolysis cyanide group convert to carboxylic acid. Upon reaction with nitric acid, the primary alcoholic group undergo oxidation to carboxylic acid group. One compound is meso compound, optically inactive and other compound is optically active.

 

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About this question

This is a previous-year question from JEE Main 2023, covering the Aldehydes and Ketones chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.