JEE Main 2021ChemistryCarboxylic Acid DerivativesHardMCQ

JEE Main 2021 — Carboxylic Acid Derivatives Question with Solution

JEE Main 2021 (26 Aug Shift 2)

Question

Match List - I with List - II.

  List - I
(Chemical Reaction)		   List - II
(Reagent used)
a CH3COOCH2CH3→CH3CH2OH i CH3MgBr/H3O+
(one equivalent)
b CH3COOCH3→CH3CHO ii H2SO4/H2O
c CH3C≡N→CH3CHO iii DIBAL-H/H2O
d iv SnCl2,HCl/H2O

Choose the most appropriate match.

Choose an option

Show full solutionCorrect option: A
Correct answer
A(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Step-by-step explanation

(a) CH3COOCH2CH3⟶H2SO4/H2OCH3CH2OH (Hydrolysis of ester)

(b) CH3COOCH3⟶DIBAL-HCH3CHO (Reduction of ester)

(c) CH3≡N⟶SnCl2,HCl/H2OCH3CHO (Reduction followed by hydrolysis)

(d)  (Nucleophillic addition reaction)

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About this question

This is a previous-year question from JEE Main 2021, covering the Carboxylic Acid Derivatives 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.