Correct Option (d):
- A. Atropine: Atropine is a parasympatholytic drug primarily used in ophthalmology to induce mydriasis (dilation of the pupil) for eye examinations or to treat certain inflammatory conditions of the eye.
- B. Ether: Diethyl ether was historically a widely used general anaesthetic for surgical procedures, inducing unconsciousness and muscle relaxation. In the context of this question, it is matched with local anaesthesia.
- C. Nitro-glycerine: Nitroglycerine is a potent vasodilator prescribed for the treatment of angina pectoris (chest pain) and other cardiovascular conditions. It works by relaxing blood vessels, thereby improving blood flow and reducing the heart's workload.
- D. Pyrethrin: Pyrethrin is a natural insecticide derived from chrysanthemum flowers. It is extensively used in pest control, including mosquito control, due to its neurotoxic effects on insects.
Incorrect Options:
- Option (a) is incorrect as it proposes an incorrect pairing for Atropine (matched with local anaesthesia instead of pupil dilation) and Ether (matched with pupil dilation instead of its anaesthetic use).
- Option (b) is incorrect due to the misattribution of uses for Nitro-glycerine and Pyrethrin. Nitro-glycerine is for heart conditions, not local anaesthesia, and Pyrethrin is for mosquito control, not heart trouble.
- Option (c) is incorrect because Nitro-glycerine is used for heart conditions, not mosquito control. Mosquito control is the application for Pyrethrin.