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

What type of chemical is obtained from the flowering branch of the plant shown below?

Drugs obtained from opium bind to specific receptors present in our $CNS$. Heroin,commonly called smack,is chemically $..........$,which is a white,odorless,bitter,crystalline compound. This is obtained by $..........$ of morphine.

Withdrawal symptoms of alcohol are

Which of the following is associated with tobacco addiction?

What is Charas?