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Q.

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 …1

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a

O3, alcohol, Wolff-Kishner reduction.

b

HCl, SnCl4, Rosenmund reduction

c

CO2, H2SO4, Clemmensen reduction

d

CO, HCl, Gattermann-Koch reaction

answer is B.

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Detailed Solution

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The above reaction is called as Gattermann koch reaction.

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