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Question

The Cannizzaro reaction is not given by

A
Trimethylacetaldehye
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B
Acetaldehyde
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C
Benzaldehyde
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D
Formaldehyde
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Solution

The correct option is B Acetaldehyde
The Cannizzaro reaction, named after its discoverer Stanislao Cannizzaro, is a chemical reaction that involves the base-induced disproportionation (self oxidation and self reduction) of an aldehyde lacking a hydrogen atom in the alpha position.

The comound containig αH atoms does not undergo Cannizzaro reaction.
Acetaldehyde does not undergo Cannizzaro reaction since it has αH atoms while formaldehyde, trimethylacetaldehyde and benzaldehyde undergo Cannizzaro reaction since they do not contain αhydrogen atoms.

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