Which of the following is a schedule X drug?
Thalidomide
Colistin
Ketamine
Halothane
Ans. C. Ketamine* The following are the Schedule X drugs mentioned in the Drugs and Cosmetics Rules 1945: Amobarbital, Amphetamine, Barbital, Cyclobarbital, Dexamphetamine, Ethchlorvynol, Glutethimide, Meprobamate, Methamphetamine, Methylphenidate, Methylphenobarbital, Phencyclidine, Phenmetrazine, Secobarbital.