Which product is obtained when bleaching powder is distilled with acetone?

$2-$methylpropane can be prepared by the Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are:

Benzyl chloride $(C_6H_5CH_2Cl)$ is prepared from toluene by chlorination with ................?

In the presence of light,toluene reacts with chlorine to give:

The major product in the following reaction sequence is:

Which of the following reaction$(s)$ can be used for the preparation of alkyl halides?
$I$. $CH_3CH_2OH + HCl \xrightarrow{Anh. ZnCl_2}$
$II$. $CH_3CH_2OH + HCl \rightarrow$
$III$. $(CH_3)_3COH + HCl \rightarrow$
$IV$. $(CH_3)_2CHOH + HCl \xrightarrow{Anh. ZnCl_2}$