JEE Main 2023ChemistryAldehydes and KetonesMediumMCQ

JEE Main 2023 — Aldehydes and Ketones Question with Solution

JEE Main 2023 (31 Jan Shift 2)

Question

Cyclohexylamine when treated with nitrous acid yields (P). On treating (P) with PCC results in (Q). When (Q) is heated with dil. NaOH we get (R) The final product (R) is:

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Show full solutionCorrect option: B
Correct answer
B

Step-by-step explanation

Cyclohexylamine when treated with nitrous acid yields cyclohexanol.On treating cyclohexanol with PCC which is a mild oxidising agent and oxidises the alcohols into aldehyde (in case of primary alcohol) or ketones (in case of secondary alcohol) in the presence of dichloromethane results cyclohexanone. When cyclohexanone is heated with dilute NaOH dehydration of aldol takes place by the removal of water molecules we get the final product.

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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.