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Friday, 9 October

JEE Main 2023 · ChemistryMultiple choiceDiagram basedMediumApplication

JEE Main 11 April 2023, Shift 1, Chemistry Q77

Question 77 of 90 in this shift, Chemistry question 17 of 30, Section A.

o-Phenylenediamine →HNO2\xrightarrow{\mathrm{HNO_2}} 'X' (Major Product) 'X' is

The figure, in words

Options are four structures derived from o-phenylenediamine.
  1. (1)[figure: benzene ring with two adjacent diazonium groups, −N+≡N\mathrm{-N^+\equiv N} and −N2+\mathrm{-N_2^+}]
  2. (2)[figure: benzotriazole, benzene ring fused to a five-membered ring containing N, N, N-H (1H-benzotriazole)]Official answer
  3. (3)[figure: 2-aminobenzenediazonium, benzene ring with adjacent −N2+\mathrm{-N_2^+} and −NH2\mathrm{-NH_2}]
  4. (4)[figure: benzene ring fused to a three-membered ring containing NH (benzazirine type)]

Official answer

Option 2

NTA final key.

Chapter
Amines
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.