Learn

Friday, 9 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumApplication

JEE Main 16 March 2021, Shift 2, Chemistry Q46

Question 46 of 90 in this shift, Chemistry question 16 of 30, Section A.

[figure: 2-substituted benzonitrile (benzene ring bearing CN and a CH(CH3)(OCH3) group ortho to each other)] reacts with (i) C6H5MgBr\mathrm{C_6H_5MgBr} (1.0 equivalent), dry Ether; (ii) H3O+\mathrm{H_3O^+} to give X, Major Product. The structure of X is :

The figure, in words

Reactant: benzene ring with CN and an ortho CH(CH3)OCH3 substituent. Options are drawn structures of ortho-disubstituted benzenes.
  1. (1)[figure: benzene ring bearing C(=O)C6H5 and CH(CH3)OCH3 ortho]Official answer
  2. (2)[figure: benzene ring bearing CH2NH2 and CH(CH3)OCH3 ortho]
  3. (3)[figure: benzene ring bearing CH2NH2 and CH(CH3)C6H5 ortho]
  4. (4)[figure: benzene ring bearing C(=O)C6H5 and CH(CH3)C6H5 ortho]

Official answer

Option 1

NTA final key.

Chapter
Aldehydes, Ketones and Carboxylic Acids
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.