Photochemical chlorination of alkane is initiated by a process of

Identify the major product formed when the following compound reacts with $NBS$ ($N$-Bromosuccinimide):
$CH_3-C_6H_4-CH(CH_3)-C_6H_4-CH_2CH_3 \xrightarrow{NBS} \text{Major Product}$

In which of the following reactions are both alkanes and alkenes obtained?

Propane is obtained from propene,by which of the following methods?

The $B.P.$ of branched-chain alkanes as compared to straight-chain alkanes is:

$CH_3Cl \to CH_4$
Above conversion can be achieved by