Freon (dichlorodifluoromethane) is used:

Freons are used in ...... .

Which of the following compounds is used as a refrigerant?

Identify the correct set from the following:

Write about the use of triiodomethane (iodoform) $CHI_3$.

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?