Question

Match List I with List II

List-I	Reaction	List-II	Reagents
(A)	Hoffmann Degradation	(I)	Conc.KOH,\(\triangle\)
(B)	Clemenson reduction	(II)	CHCl3, NaOH/H3O+
(C)	Cannizaro reaction	(III)	Br2, NaOH
(D)	Reimer-Tiemann Reaction	(IV)	Zn-Hg/HCl

Choose the correct answer from the option given below:

• A. (A)-III, (B) -IV, (C) – II, (D)-I
• B. (A)-III, (B) -IV, (C) –I, (D)-II
• C. (A)-II, (B) -IV, (C) –I, (D)-III
• D. (A)-II, (B) -I, (C) – III, (D)-IV

Hint:

For reaction and reagent matching:
• Focus on identifying the reagents specific to each reaction’s mechanism.
• Recall key reagents used for reductions, substitutions, or rearrangements in named reactions.

Answer 1

The Correct Option is B

- Hoffmann Degradation Reaction: This reaction uses Br2 and NaOH to convert amides into amines. Reagent: (III).
- Clemenson Reduction: This reaction reduces ketones or aldehydes to alkanes using Zn-Hg in HCl. Reagent: (IV).
- Cannizzaro Reaction: This reaction involves disproportionation of aldehydes without α-hydrogen in concentrated alkali. Reagent: (I).
- Reimer-Tiemann Reaction: This reaction introduces a −CHO group to phenols using CHCl₃ and NaOH. Reagent: (II).