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Benzaldehyde can be prepared from benze...

Benzaldehyde can be prepared from benzene by passing vapours of ……. and ……… in its solution in presence of catalyst mixture of aluminium chloride and cuprous chloride. The reaction is known as …….. .

A

`Hcl, SnCl_4`, Rosenmud reduction

B

Co, HCl, Gattermann-Koch reaction

C

`CO_(2), H_(2)SO_(4)`, Clemmensen reduction

D

`O_(3)`, alcohol, Wolf - Kishner reduction

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The correct Answer is:
B
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