The major product in the following reaction sequence is-

1.                            

2.  

3.         

4.  

1.           2.  

3.                    4.  

Identify Y in the following sequence

1.         2.  

3.                4.  

B maybe-

1.         2.  

3.               4.  

Identify A in the following sequence of reactions?

1.        2.  

3.        4.  HCN

A and B respectively are

1.             2.  

3.               4.  

Identify the major product formed in the following reaction

1.        2.  

3.        4.  

The best rate for esterification is observed when 'X' is-

1.  -OH

2.  -Cl

3.  $\begin{array}{cccccc}-& \mathrm{O}& -& \mathrm{C}& -& \mathrm{R}\\ & & & \parallel & & \\ & & & \mathrm{O}& & \end{array}$

4.  $-{\mathrm{NH}}_2$

What is (X)?

1.       2.  

3.            4.  

Identify the product formed during the following reaction.

1.           2.  

3.           4.