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Saturday, 31 October

JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 29 June 2022, Shift 2, Chemistry Q90

Question 90 of 90 in this shift, Chemistry question 30 of 30, Section B.

In the given reaction, [figure: six-membered ring with a carbonyl oxygen (O double bonded to a ring carbon); reagents over the arrow: (i) ⁻OH, (ii) heat; product 'P' Major Product] The number of π electrons present in the product ‘P’ is ____.

The figure, in words

Reaction scheme: six-membered ring with a carbonyl oxygen (O double bonded to ring carbon), arrow labelled (i) -OH, (ii) heat, giving 'P' (Major Product).

Official answer

4

NTA final key.

Chapter
Aldehydes, Ketones and Carboxylic Acids
Topic
Aldol and Cannizzaro
Idea tested
Self-Aldol Condensation

Same idea in other shifts

Asked 4× in all
  1. 6 Apr 2026, Shift 2 · Q64'xx' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of mercuric sulphate under dilute acidic medium at…MediumSingle correct
  2. 25 Jul 2022, Shift 2 · Q74What is the major product of the following reaction ? [figure: skeletal drawing of a carbon chain with a branch point (two bond stubs on a…MediumDiagram basedHas a figure
  3. 18 Mar 2021, Shift 2 · Q46[figure: reaction scheme] Consider the above reaction, the product ‘X’ and ‘Y’ respectively are :MediumDiagram basedHas a figure

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.