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Saturday, 31 October

JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 6 April 2026, Shift 2, Chemistry Q64

Question 64 of 75 in this shift, Chemistry question 14 of 25, Section A.

'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 333 K. 'yy' is the product which is obtained by the reaction of ethane nitrile with methyl magnesium bromide in dry ether followed by hydrolysis. IUPAC name of product obtained from 'xx' and 'yy' in the presence of barium hydroxide followed by heating is :
  1. (1)2 - Methylpent-4-en-3-one
  2. (2)4 - Methylpent-3-en-2-oneOfficial answer
  3. (3)4 - Methylpent-1-ene
  4. (4)2 - Methylpent-3-one

Official answer

Option 2

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. 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
  2. 29 Jun 2022, Shift 2 · Q90In the given reaction, [figure: six-membered ring with a carbonyl oxygen (O double bonded to a ring carbon); reagents over the arrow: (i)…MediumNumerical valueHas 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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.