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Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 8 April 2025, Shift 2, Chemistry Q69

Question 69 of 75 in this shift, Chemistry question 19 of 25, Section A.

A→(ii) H3O+(i) NaOHB→(ii) H2SO4,Δ(i) EtOHCA \xrightarrow[\text{(ii) H}_3\text{O}^+]{\text{(i) NaOH}} B \xrightarrow[\text{(ii) H}_2\text{SO}_4, \Delta]{\text{(i) EtOH}} C 'A' shows positive Lassaign's test for N and its molar mass is 121. 'B' gives effervescence with aq NaHCO3\mathrm{NaHCO_3}. 'C' gives fruity smell. Identify A, B and C from the following.

The figure, in words

Each option gives structures of A, B and C as substituted benzene rings (skeletal drawings).
  1. (1)A = [benzene ring with CONH2\mathrm{CONH_2}], B = [benzene ring with CO2H\mathrm{CO_2H}], C = [benzene ring with CO2Et\mathrm{CO_2Et}]Official answer
  2. (2)A = [benzene ring with CH2NHNH2\mathrm{CH_2NHNH_2}], B = [benzene ring with CO2H\mathrm{CO_2H}], C = [benzene ring with CO2Et\mathrm{CO_2Et}]
  3. (3)A = [4-aminobenzaldehyde: benzene ring with CHO and para NH2\mathrm{NH_2}], B = [4-aminobenzoin: 4-H2N-C6H4-CH(OH)-C(=O)-C6H4-4-NH2\mathrm{4\text{-}H_2N\text{-}C_6H_4\text{-}CH(OH)\text{-}C(=O)\text{-}C_6H_4\text{-}4\text{-}NH_2}], C = [4-H2N-C6H4-CH(OH)-C(OH)(OEt)-C6H4-4-NH2\mathrm{4\text{-}H_2N\text{-}C_6H_4\text{-}CH(OH)\text{-}C(OH)(OEt)\text{-}C_6H_4\text{-}4\text{-}NH_2}]
  4. (4)A = [2-aminobenzaldehyde: benzene ring with ortho CHO and NH2\mathrm{NH_2}], B = [benzene ring with ortho NH2\mathrm{NH_2} and CO2H\mathrm{CO_2H}], C = [benzene ring with ortho NHEt and CO2Et\mathrm{CO_2Et}]

Official answer

Option 1

NTA final key.

Chapter
Amines

Same idea in other shifts

Asked 2× in all
  1. 29 Jun 2022, Shift 1 · Q75Given below are two statements : Statement I : The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution.…MediumTwo statements

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.