$\stackrel{\mathrm{Conc}.<mspace\; width="1em"></mspace>{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }<mspace\; width="1em"></mspace>\left(\mathrm{B}\right)<mspace\; width="1em"></mspace>\left(\mathrm{major}<mspace\; width="1em"></mspace>\mathrm{product}\right).<mspace\; width="1em"></mspace>\mathrm{Product}<mspace\; width="1em"></mspace>\left(\mathrm{B}\right)<mspace\; width="1em"></mspace>\mathrm{is}$

1.             2.  

3.          4.  

The product of acetone with ${\mathrm{PCl}}_5$ is

1.  ${\mathrm{ClCH}}_2{\mathrm{COCH}}_2\mathrm{Cl}$

2.  ${\mathrm{CH}}_3{\mathrm{COCH}}_2\mathrm{Cl}$

3.  ${\mathrm{CH}}_3{\mathrm{COCHCl}}_2$

4.  ${\mathrm{CH}}_3{\mathrm{CCl}}_2{\mathrm{CH}}_3$

What is the major product of the following reaction sequence?

1.                            

2.  

3.         

4.  

1.           2.  

3.                    4.  

The final product Y in the below mentioned sequence is:

1.		2.
3.		4.

Consider the following reaction

The structure of B is:

1.		2.
3.		4.

Identify A in the following sequence of reactions.

1.		2.
3.		4.	HCN

The products A and B in the below mentioned reaction are, respectively:

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.  $-{\mathrm{NH}}_2$