Give the structures of A and B in the following sequence of reactions

The following sequence of reactions on A gives

Give the structure of 'A' in the following reaction.

Complete the following sequence of reactions :

The correct structure of product, D formed in the following sequence of reactions is

In the following sequence of reaction the product B is :

Write the structures of A, B, C and D in the following reactions :

identify structure of A in the following reaction sequence

(A) Write the structures of A,B,C,D and E in the following reactions, (B) Give balanced equation for the following name reaction : Rosenmund reaction.