Which of the following is $NOT$ obtained when a mixture of methyl chloride and $n-$propyl chloride is treated with sodium metal in dry ether?

Identify the initiation step$(s)$ $(X)$ and termination step$(s)$ $(Y)$ of free radical chlorination of $CH_4$ from the following:
$a) \dot{C}H_3 + \dot{Cl} \rightarrow CH_3-Cl$
$b) \dot{Cl} + \dot{Cl} \rightarrow Cl_2$
$c) \dot{C}H_3 + Cl_2 \rightarrow CH_3-Cl + \dot{Cl}$
$d) Cl_2 \rightarrow 2\dot{Cl}$
$e) CH_4 + \dot{Cl} \rightarrow \dot{C}H_3 + HCl$
$f) \dot{C}H_3 + \dot{C}H_3 \rightarrow CH_3-CH_3$

$CH_4 + Cl_2 \xrightarrow{UV} CH_3Cl + HCl$. This reaction is an example of.........

Assertion $(A)$: Cyclohexane is the most stable cycloalkane.
Reason $(R)$: Cyclopropane and cyclobutane are less stable due to angle strain and torsional strain.
The correct answer is

Reaction of ethyl chloride with sodium leads to

Sodium ethanoate on heating with soda lime gives '$X$'. Electrolysis of aqueous solution of sodium ethanoate gives '$Y$'. '$X$' and '$Y$' respectively are