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Question

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:

A
hydrocyanic acid
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B
sodium hydrogen sulphite
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C
a Grignard reagent
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D
hydrazine in presence of feebly acidic solution
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Solution

The correct option is A hydrazine in presence of feebly acidic solution
Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water.

The reagent is hydrazine in presence of feebly acidic solution.

For example, the reaction between acetone and hydrazine to form hydrazone is shown below.

374623_420764_ans.png

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