Reaction by which benzaldehyde cannot be prepared is :

Options

A.
B.
C.
D.

Answer

D

Explanation

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 reactants given in option (d) benzaldehyde is not obtained.