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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumApplication

JEE Main 26 August 2021, Shift 1, Chemistry Q47

Question 47 of 90 in this shift, Chemistry question 17 of 30, Section A.

The major product formed in the following reaction is : [figure: ring system of a hexagonal ring fused to a five-membered ring containing NH; the five-membered ring carries a side chain CH2\mathrm{CH_2}-CH(COOH)(NH2_2); arrow labelled SOCl2\mathrm{SOCl_2}, CH3OH\mathrm{CH_3OH} then "Major Product"]

The figure, in words

Reactant and options are skeletal drawings of a hexagonal ring fused to a five-membered ring with N-H; the five-membered ring bears a chain CH2\mathrm{CH_2}-CH, with CH carrying COOH (up-right) and NH2\mathrm{NH_2} (down). Reagents above arrow: SOCl2\mathrm{SOCl_2}, CH3OH\mathrm{CH_3OH}.
  1. (1)[figure: same ring system with side chain CH2\mathrm{CH_2}-CH(NH2\mathrm{NH_2})-COCl]
  2. (2)[figure: same ring system with side chain CH2\mathrm{CH_2}-CH(NH2⋅HCl\mathrm{NH_2 \cdot HCl})-CO2CH3\mathrm{CO_2CH_3}]Official answer
  3. (3)[figure: same ring system with ring NH printed as H⋅HCl\mathrm{H \cdot HCl} and side chain CH2\mathrm{CH_2}-CH(NH2⋅HCl\mathrm{NH_2 \cdot HCl})-CO2CH3\mathrm{CO_2CH_3}]
  4. (4)[figure: same ring system with Cl at a hexagonal-ring vertex and side chain CH2\mathrm{CH_2}-CH(NH2\mathrm{NH_2})-CO2Me\mathrm{CO_2Me}]

Official answer

Option 2

NTA final key.

Chapter
Biomolecules
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.