The product in the below mentioned reaction is 

1.		2.
3.		4.

$(\mathrm{HCOO}{)}_2\mathrm{Ca}+{\left({\mathrm{CH}}_3\mathrm{COO}\right)}_2\mathrm{Ca}-\stackrel{\mathrm{Heat}}{\to }\mathrm{A}+\mathrm{B}+\mathrm{C}$

In this reaction

1.  $\mathrm{A}=\mathrm{B}=\mathrm{C}=\mathrm{HCHO}$

2.  $\mathrm{A}=\mathrm{B}=\mathrm{C}={\mathrm{CH}}_3\mathrm{CHO}$

3.  $$\begin{gathered} \mathrm{A}=\mathrm{HCHO}, \mathrm{B}={\mathrm{CH}}_3\mathrm{CHO} \mathrm{and} \mathrm{C}={\mathrm{CH}}_3-\stackrel{\mathrm{O} \\ \left|\right|}{\mathrm{C}}-{\mathrm{CH}}_3 \end{gathered}$$

4.  $$\begin{gathered} \mathrm{A}=\mathrm{B}={\mathrm{CH}}_3\mathrm{CHO} \mathrm{and} \mathrm{C}={\mathrm{CH}}_3-\stackrel{\mathrm{O} \\ \left|\right|}{\mathrm{C}}-{\mathrm{CH}}_3 \end{gathered}$$

Which of the following compound will give a positive iodoform test?

1.        2.  

3.        4.  All of these

$\stackrel{\mathrm{Conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to } \left(\mathrm{B}\right) \left(\mathrm{major} \mathrm{product}\right). \mathrm{Product} \left(\mathrm{B}\right) \mathrm{is}$

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