Sulpha drugs are used for

Fill in the blanks:
$(i)$ ........ and ......... drugs are effective for the treatment of cancer.
$(ii)$ ............ is responsible for the depletion of ozone in the stratosphere.
$(iii)$ ......... is helpful for patients suffering from $AIDS$.
$(iv)$ The $SI$ unit of electric current is ...... .

Hexamethylene tetramine is used as

The class of drug to which chlordiazepoxide,with the structure shown below,belongs is:

Which of the following is useful for lowering blood pressure?

Match the compounds of List-$I$ with their effects in List-$II$:

List-$I$	List-$II$
$(a)$ $Chloramphenicol$	$(i)$ $Malaria$
$(b)$ $Thyroxine$	(ii) $Anaesthetic$
$(c)$ $Chloroquine$	(iii) $Goiter$
$(d)$ $Chloroform$	(iv) $Typhoid \text{ } fever$