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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumMulti-step

JEE Main 17 March 2021, Shift 2, Chemistry Q47

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

C7H7N2OCl+C2H5OH⟶\mathrm{C_7H_7N_2OCl + C_2H_5OH} \longrightarrow [structure] +N2+"X"+"Y"+ \mathrm{N_2} + \text{"X"} + \text{"Y"} (A) In the above reaction, the structural formula of (A), "X" and "Y" respectively are :

The figure, in words

Stem: left side C7H7N2OCl (labelled (A)) + C2H5OH; arrow to a benzene ring bearing OCH3 at the top, then + N2 + "X" + "Y". Options each list three items separated by commas: a substituted benzene ring (N2+ with either a Cl- counter-ion beside it or a O-bar CH3 written beside it, at the top; Cl or OCH3 at the bottom), then X (a three-membered ring with O at the bottom and four H drawn, or CH3-C(=O)-H drawn with C=O double bond), then Y (HCl or H2O). Option 1 and 2 show N2+ and O-bar-CH3 together at the top with Cl at bottom; options 3 and 4 show N2+ Cl- at top and OCH3 at bottom.
  1. (1)[figure: benzene ring with N2+ OˉCH3\mathrm{N_2^+\ \bar{O}CH_3} written at the top position and Cl at the bottom position], [figure: three-membered ring of two C and one O, each C bearing two H], HCl\mathrm{HCl}
  2. (2)[figure: benzene ring with N2+ OˉCH3\mathrm{N_2^+\ \bar{O}CH_3} written at the top position and Cl at the bottom position], CH3−C(=O)−H\mathrm{CH_3-C(=O)-H}, H2O\mathrm{H_2O}
  3. (3)[figure: benzene ring with N2+ Cl−\mathrm{N_2^+\ Cl^-} at the top position and OCH3\mathrm{OCH_3} at the bottom position], [figure: three-membered ring of two C and one O, each C bearing two H], H2O\mathrm{H_2O}
  4. (4)[figure: benzene ring with N2+ Cl−\mathrm{N_2^+\ Cl^-} at the top position and OCH3\mathrm{OCH_3} at the bottom position], CH3−C(=O)−H\mathrm{CH_3-C(=O)-H}, HCl\mathrm{HCl}Official answer

Official answer

Option 4

NTA final key.

Chapter
Amines

Same idea in other shifts

Asked 4× in all
  1. 6 Apr 2026, Shift 2 · Q67Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all…HardSingle correctHas a figure
  2. 3 Apr 2025, Shift 1 · Q69In the following reactions, which one is NOT correct?EasyDiagram basedHas a figure
  3. 30 Jun 2022, Shift 1 · Q77[structure: A + CH3CH2OH\mathrm{CH_3CH_2OH} ⟶\longrightarrow benzene ring]…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. 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.