Q.

Aluminium salt commonly used to stop bleeding is -

A. Aluminium nitrate
B. Aluminium sulphate
C. Aluminium Chloride
D. Potash alum
Answer» B. Aluminium sulphate
Explanation: Alum (Aluminium Sulfate) is used to stop bleeding. For example, Styptic pencils containing aluminium sulfate are used as astringents to prevent bleeding from small shaving cuts. It constricts blood vessels to stop the flow of blood.
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