NEET Chemistry Nucleophilic Addition Assertion Reason Question
Assertion (A): Aldehydes and ketones react with hydrogen cyanide (HCN) to yield cyanohydrins. | Reason (R): The reaction is catalysed by a base and the generated cyanide ion (CN-) is a stronger nucleophile.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false.
Correct Answer
Detailed Explanation
According to the NCERT context, aldehydes and ketones react with HCN to form cyanohydrins, and this reaction is slow with pure HCN but is catalysed by a base that generates CN-, a stronger nucleophile.
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