Q.

The compound used in prickly-heat powder to prevent excessive sweating is –

A. Boric acid
B. Phosphoric acid
C. Carbonic acid
D. Sulphonic acid
Answer» A. Boric acid
Explanation: Boric acid (H3BO3), also called hydrogen borate, boracie acid, orthoboric acid and acidum boricum, is used in prickly heat powders to prevent excessive sweating. Boric acid is also used as an antiseptic for minor burns or cuts and is sometimes used in dressings or salves. As an antibacterial compound, boric acid can also be used for acne treatment.
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