Which of the following opium alkaloids is used for the relaxation of smooth muscles?

Read the following statements:
$a.$ Heroin,commonly called smack,is obtained by acetylation of morphine.
$b.$ Cocaine is obtained from the latex of Papaver somniferum.
$c.$ Dopamine is an excitatory neurotransmitter.
$d.$ Morphine is an effective sedative and painkiller.
Mark the option which includes both correct statements.

Excessive consumption of alcohol leads to:

Cocaine interferes with the transport of which neurotransmitter?

Which of the following is $NOT$ an effect of withdrawal syndrome?

Which chemical causes the side-effect of enlargement of the clitoris in females?