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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctHardMulti-step

JEE Main 24 June 2022, Shift 1, Chemistry Q76

Question 76 of 90 in this shift, Chemistry question 16 of 30, Section A.

[figure: 4-methoxybenzyl bromide, i.e. 4-CH3O\mathrm{CH_3O}-C6H4-CH2Br\mathrm{CH_2Br}] (i) NaCN (ii) OH−\mathrm{OH^-} (iii) Cyclohexanone (iv) H2\mathrm{H_2}, Ni ⟶\longrightarrow A (Major Product) The major product of the above reactions is :

The figure, in words

Reactant 4-methoxybenzyl bromide; options are drawn structures.
  1. (1)[figure: 4-CH3O\mathrm{CH_3O}-C6H4-CH(cyclohexyl)-CH2NH2\mathrm{CH_2NH_2}]
  2. (2)[figure: 4-CH3O\mathrm{CH_3O}-C6H4-CH(NH2\mathrm{NH_2})-(1-hydroxycyclohexyl)]
  3. (3)[figure: 4-CH3O\mathrm{CH_3O}-C6H4-CH(cyclohexyl)-CONH2\mathrm{CONH_2}]
  4. (4)[figure: 4-CH3O\mathrm{CH_3O}-C6H4-CH(1-hydroxycyclohexyl)-CH2NH2\mathrm{CH_2NH_2}]Official answer

Official answer

Option 4

NTA final key (2022 Session 1).

Chapter
Amines
Topic
Amines

Same idea in other shifts

Asked 3× in all
  1. 24 Jun 2022, Shift 2 · Q77The conversion of propan-1-ol to n-butylamine involves the sequential addition of reagents. The correct sequential order of reagents isMediumSingle correct
  2. 5 Sep 2020, Shift 1 · Q29The most appropriate reagent for conversion of C2H5CN\mathrm{C_2H_5CN} into CH3CH2CH2NH2\mathrm{CH_3CH_2CH_2NH_2} is :EasySingle correct

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.