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Preparation of Haloalkane from Alkene

Benzaldehyde ...

Question

Benzaldehyde on refluxing with aqueous alcoholic KCN produce:

A

Cyanobenzene

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B

Cyanohydrin

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C

Benzoyl cyanide

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D

Benzoin

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Solution

The correct option is D Benzoin
Benzaldehyde when treated with an alcoholic solution of potassium cyanide forms benzoin. It is an example of benzoin condensation. The reaction is as

Hence, option D is correct.

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Preparation of Haloalkane from Alkene

Standard XII Chemistry

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