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JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 8 April 2024, Shift 2, Chemistry Q86

Question 86 of 90 in this shift, Chemistry question 26 of 30, Section B.

Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH after heating gives

x

as the major product. The number of

\pi

bonds in the product

x

is ________.

Official answer

9

NTA final key.

Chapter: Aldehydes, Ketones and Carboxylic Acids
Topic: Aldol and Cannizzaro
Idea tested: Claisen-Schmidt Condensation

Same idea in other shifts

Asked 2× in all

5 Apr 2024, Shift 2 · Q87In the Claisen-Schmidt reaction to prepare 351 g of dibenzalacetone using 87 g of acetone, the amount of benzaldehyde required is ________…MediumNumerical value

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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.