What is the major product of the following reaction?

                 

1.  2.  

3.  4.  

Which of the following is the most suitable major product?

1.       2.  

3.           4.  

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

Compound (A) in the given reaction is:

1.		2.
3.		4.

What is the major product of the following reaction sequence?

1.                            

2.  

3.         

4.  

1.           2.  

3.                    4.