Paraffins are soluble in

On treating a mixture of two alkyl halides with sodium metal in dry ether,$2-$methylpropane was obtained. The alkyl halides are

Which of the following will not give one monochloro product?

Kerosene is a mixture of

Photochemical chlorination of an alkane is initiated by a process of

$CH_4 + Cl_2 \xrightarrow{hv} CH_3Cl + HCl$
To obtain high yields of $CH_3Cl$,the ratio of $CH_4$ to $Cl_2$ must be