JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 26 June 2022, Shift 2, Chemistry Q75

Question 75 of 90 in this shift, Chemistry question 15 of 30, Section A.

The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is [drawn benzene ring with COOH, arrow, drawn benzene ring with CHO]

The figure, in words

Stem: a benzene ring bearing COOH, an arrow, then a benzene ring bearing CHO.

(1) $\mathrm{LiAlH_4}$
(2) $\mathrm{KMnO_4}$
(3)MnOOfficial answer
(4) $\mathrm{NaBH_4}$

Official answer

Option 3

NTA final key.

Chapter: Aldehydes, Ketones and Carboxylic Acids
Topic: Carboxylic Acids and Derivatives
Idea tested: Reduction of Acids

Same idea in other shifts

Asked 5× in all

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.