MHT CET 2025 Chemistry question

Which of the following pair of compounds on heating gives butanenitrile?

(A)Propanol and alcoholic KCN
(B)Butanol and alcoholic KCN
(C)n-Butylchloride and alcoholic KCN
(D)n-Propylchloride and alcoholic KCNCorrect

Answer: (D)

Solution

Alkyl halides undergo nucleophilic substitution with alcoholic KCN to give nitriles, and the product has one more carbon than the alkyl halide: . Butanenitrile is (4 carbons), so the

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Question ID VK-101319