Explain why alum is used to prevent bleeding from wound of body. – InterviewSolution

InterviewSolution

1.	Explain why alum is used to prevent bleeding from wound of body.
Answer» Blood is colloidal solution of substances like albumin in water. It has negatively charged particles. The fresh solution of alum or ferric chloride is added on flowing blood which coagulates blood by Al³⁺ or Fe³⁺ ions and stop flow of blood.

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