Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as

Perkin’s reaction

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Cannizzaro’s reaction

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Sandmeyer’s reaction

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Claisen condensation

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Solution

The correct option is B
Cannizzaro’s reaction

Benzaldehyde on treatment with 50% aqueous or ethanolic alkali solution undergoes Cannizzaro’s reaction like HCHO (no $α$ - hydrogen atom) i.e., one molecule is oxidised and one is reduced with the formation of benzoic acid and benzyl alcohol respectively.
$2 C_{6} H_{5} C H O N a O H \to C_{6} H_{5} C H_{2} O H + C_{6} H_{5} C O O N a$

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