question_answer

Reaction by which benzaldehyde cannot be prepared?                                  [NEET 2013]

A)  

B)  

C)

D)

Correct Answer: D

Solution :

[d] [A]

This reaction is known as Etard reaction.

[B]

This reaction is called Rosenmund reaction.

[C]

The above reaction is known as Gattermann-Koch aldehyde synthesis.

[D]

Thus, from the reagents given in option benzaldehyde is not obtained.