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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 24 June 2022, Shift 2, Chemistry Q77

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

The conversion of propan-1-ol to n-butylamine involves the sequential addition of reagents. The correct sequential order of reagents is
  1. (1)(i) SOCl2_2 (ii) KCN (iii) H2_2/Ni, Na(Hg)/C2_2H5_5OHOfficial answer
  2. (2)(i) HCl (ii) H2_2/Ni, Na(Hg)/C2_2H5_5OH
  3. (3)(i) SOCl2_2 (ii) KCN (iii) CH3_3NH2_2
  4. (4)(i) HCl (ii) CH3_3NH2_2

Official answer

Option 1

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Reduction of Nitriles vs Isocyanides

Same idea in other shifts

Asked 3× in all
  1. 24 Jun 2022, Shift 1 · Q76[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)…HardSingle correctHas a figure
  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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.