Phenacetin is used as :

• antipyretics

• antiseptics

• analgesic

• antimalarials

Which of the following is a use of alum?

• Making explosives

• Bleaching clothes

• Water softening

• All of the above

Among the following, the narrow spectrum antibiotic is :

• Ampicillin

• Amoxycillin

• Chloramphenicol

• Penicillin G