Question
Question: Benzaldehyde can be prepared from benzene by passing vapours of ……. And ……. In its solution in prese...
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, SnCl4, Rosenmund reduction.
B
CO, HCl, Gattermann-koch reaction
C
Clemmensen reduction
D
alcohol, wolff- kishner reduction.
Answer
CO, HCl, Gattermann-koch reaction
Explanation
Solution
: Benzaldehyde can be prepared from benzene by passing vapours of CO and hydrochloric acid in its solution in presence of catalyst mixture of 
The reaction is known as Gattermann-Koch reaction.
