Name a sweetening agent used in the preparation of sweets for a diabetic patient.

Which one of the following is known as a broad-spectrum antibiotic?

Which of the following artificial sweeteners has the lowest sweetness value?

Chloramphenicol is an

Which of the following statements are correct?
$(i)$ Drugs that mimic natural messenger by switching on the receptor are called agonists.
$(ii)$ Shape of the receptor does not change after attachment of chemical messenger.
$(iii)$ $A$ cationic detergent is formed when stearic acid reacts with polyethylene glycol.
$(iv)$ Seldane is an antihistamine.

Chloramphenicol is: