The number of $-OH$ groups present in the structures of bithionol,terpineol and chloroxylenol is respectively:

Which of the following can be used as an analgesic without modification?

Assertion : Sedatives are given to patients who are mentally agitated and violent.
Reason : Sedatives are used to suppress the activities of the central nervous system.

Which of the following is useful for lowering blood pressure?

Which of the following is a hypnotic?

The compound which causes antidepressant action on the central nervous system is