$CHCl_3$ and $HF$ lead to the formation of a compound of fluorine of molecular weight $70$. The compound is

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

Which one of the following processes does not occur during the formation of $CHCl_3$ from $C_2H_5OH$ and bleaching powder?

Nitroalkanes are obtained in the laboratory from primary or secondary alkyl halides by the action of:

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

By which reaction is Freon-$12$ manufactured from tetrachloromethane?