The products formed in the following reaction are:

The Newman projection of the staggered conformation of ethane is:

The smallest compound,which on photochlorination produces diastereomers is

Given below are two statements :
Statement-$I$ : $2-$methylbutane on oxidation with $KMnO_4$ gives $2-$methylbutan$-2-$ol.
Statement-$II$ : $n-$alkanes can be easily oxidised to corresponding alcohol with $KMnO_4$.
Choose the correct option:

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

Which of the following isomeric heptanes can yield seven different monochlorinated products upon free radical chlorination?