What happens when ethyl chloride is treated with ${\mathrm{CoF}}_2$?

Identify the reagent(s) '$\mathrm{A}$' and condition(s) for the reaction :

For the given reaction:

What is $\mathrm{A}$?

Major product P of above reaction, is:

The following reaction,

$\mathrm{R}-\mathrm{X}+\mathrm{NaI}\to \mathrm{R}-\mathrm{I}+\mathrm{NaX}$  where, $\mathrm{X}=\mathrm{Cl},\mathrm{Br}$ is known as

The major products, $\mathrm{P}$ and $\mathrm{Q}$, formed in the reactions given below are:

The major product of the following reaction is:

The major product (Q) of the below reactions is

What is the product formed in the following reaction?

${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{Cl}+\mathrm{NaI}\underset{\mathrm{heat}}{\overset{\left(\mathrm{acetone}\right)}{\to }}{\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{I}+\mathrm{NaCl}$

The reaction is

Identify $\mathrm{X}$ in the reaction given below