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Ferric chloride is applied to stop bleeding because

1. Blood absorbs FeCl 3 and forms a complex.
2. Cl – ions cause coagulation of blood.
3. Fe 3+ ions coagulate blood which is a negatively charged sol.
4. FeCl 3 reacts with the constituents of blood which is a positively charged sol.

Correct answer: Fe 3+ ions coagulate blood which is a negatively charged sol.

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