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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceMatch the listMediumApplication

JEE Main 26 August 2021, Shift 2, Chemistry Q45

Question 45 of 90 in this shift, Chemistry question 15 of 30, Section A.

Match List - I with List - II. List - I (Chemical Reaction) (a) CH3COOCH2CH3→CH3CH2OH\mathrm{CH_3COOCH_2CH_3} \rightarrow \mathrm{CH_3CH_2OH} (b) CH3COOCH3→CH3CHO\mathrm{CH_3COOCH_3} \rightarrow \mathrm{CH_3CHO} (c) CH3C≡N→CH3CHO\mathrm{CH_3C \equiv N} \rightarrow \mathrm{CH_3CHO} (d) CH3C≡N→\mathrm{CH_3C \equiv N} \rightarrow [drawn structure: a carbon with a double-bonded O above it, bonded to CH3\mathrm{CH_3} on each side] List - II (Reagent used) (i) CH3MgBr/H3O+\mathrm{CH_3MgBr/H_3O^+} (1.equivalent) (ii) H2SO4/H2O\mathrm{H_2SO_4/H_2O} (iii) DIBAL-H/H2O\mathrm{H_2O} (iv) SnCl2\mathrm{SnCl_2}, HCl/H2O\mathrm{H_2O} Choose the most appropriate match.

The figure, in words

Item (d) product is drawn as a skeletal structure: a carbon with a double-bonded O above, bonded to CH3 on its left and CH3 on its right.
  1. (1)(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)Official answer
  2. (2)(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  3. (3)(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
  4. (4)(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Official answer

Option 1

NTA final key.