Question

Which of the following compounds is used as a sedative (sleep-inducing substance)?

• A. Sodium Chloride
• B. Potassium bromide
• C. Calcium Chloride
• D. Phosphorous trichloride

Answer 1

Answer: (B)

Potassium bromide

Potassium bromide ($KBr$) is a salt, widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries.

Its action is due to the bromide ion (sodium bromide is equally effective).

Hence option B is correct answer.