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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedHardConceptual

JEE Main 30 June 2022, Shift 1, Chemistry Q75

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

Choose the reaction which is not possible :

The figure, in words

Each option is a reaction scheme drawn with benzene rings.
  1. (1)[figure: benzene ring bearing X, + 2Na, Ether, giving two benzene rings joined by a single bond]
  2. (2)[figure: benzene ring with Cl and, at the opposite ring position, NO2, + NaOH, (i) Δ (ii) HCl, giving benzene ring with OH and, at the opposite ring position, NO2]
  3. (3)[figure: benzene ring bearing CH2CHO, + [Ag(NH3)2]+ + OH-, Δ, giving benzene ring bearing CH2COO-]
  4. (4)[figure: benzene ring bearing CHO, + Cu2+ + OH-, giving benzene ring bearing COO-]Official answer

Official answer

Option 4

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