Which of the following is a schedule X drug?
(A) Thalidomide (B) Colistin (C) Ketamine (D) Halothane
(C) 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.