JEE Main 2021ChemistryAldehydes and KetonesHardMCQ

JEE Main 2021 — Aldehydes and Ketones Question with Solution

JEE Main 2021 (31 Aug Shift 2)

Question

The structures of A and B formed in the following reaction are : Ph=-C6H5

Choose an option

Show full solutionCorrect option: A
Correct answer
A

Step-by-step explanation

Friedel-Craft acylation reaction in benzene takes place. Aluminium chloride is Lewis acid which helps in generating electrophile as shown in first step of reaction.

This electrophile get substituted in benzene and product (A) is obtained. In next step, Clemmensen's reduction occur which converts aldehyde or ketone into hydrocarbon.

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About this question

This is a previous-year question from JEE Main 2021, 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.