Diacetylmorphine is extracted from . . . . . . .

$A$ man was suffering from mental illness like depression and insomnia. Identify the drug which is normally used as medicine in such cases.

If an addict takes drugs through injections,which diseases are they likely to contract? $(i)$ Malaria $(ii)$ Filariasis $(iii)$ $AIDS$ $(iv)$ Hepatitis-$B$

Caffeine,cocaine and amphetamine are

Nicotine intake stimulates the $...A...$ to release $...B...$ and $...C...$ into blood circulation. This leads to an increase in $...D...$ and an increase in $...E...$. Here $A$ and $E$ refer to:

Which concentrated resin is obtained from the female flowers of the cannabis plant?