Which of the following is effectively used instead of $DDT$?

State the various uses of:
$(i)$ Dichloromethane (Methylene chloride)
$(ii)$ Trichloromethane (Chloroform)
$(iii)$ Tri-iodomethane (Iodoform)
$(iv)$ Tetrachloromethane (Carbon tetrachloride)
$(v)$ Freons

Major product obtained on reaction between chlorobenzene and chloral taken in $2:1$ ratio in acidic condition is

Benzene hexachloride $(BHC)$ is used as

Write two uses of $PCBs$.

Match List-$I$ with List-$II$.

List-$I$ Compound	List-$II$ Use
$A$. Carbon tetrachloride	$I$. Paint remover
$B$. Methylene chloride	$II$. Refrigerators and air conditioners
$C$. $DDT$	$III$. Fire extinguisher
$D$. Freons	$IV$. Non-biodegradable insecticide

Choose the correct answer from the options given below: