The commercial uses of $DDT$ and benzene hexachloride are:

Which of the following is an anaesthetic?

State the uses and harmful effects (side effects) of dichloromethane (methylene dichloride),$CH_2Cl_2$.

Some halogen-containing compounds are useful in daily life. Some compounds of this class are responsible for the exposure of flora and fauna to increasing amounts of $UV$ light,which causes significant destruction. Name the class of these halocompounds. In your opinion,what should be done to minimize the harmful effects of these compounds?

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

Benzene hexachloride $(BHC)$ is used as