Which of the following is used as an anaesthetic?

Correct answer: (c) Ether

Explanation

Diethyl ether ((C₂H₅)₂O) was one of the first general anaesthetics, first used publicly in surgery in 1846. Breathing in its vapour causes loss of sensation and consciousness. It is highly flammable, so safer anaesthetics such as isoflurane and sevoflurane have replaced it.

• Ethyl acetate is a solvent, for example in nail-polish remover.
• Ethyl alcohol is used as a fuel, a solvent and an antiseptic.
• Carbon tetrachloride was used in fire extinguishers and for dry cleaning, but it is toxic.