The correct structure of the drug paracetamol is

Which of the following statements is incorrect for antibiotics?

What is the mode of action of antimicrobial drugs?

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.

Which of the following is an analgesic?

Which of the following statements is incorrect?