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Question
Statement: To stop bleeding from an injury, ferric chloride can be applied. Which comment about the statement is justified?
Options
It is not true, ferric chloride is a poison.
It is true, Fe3+ ions coagulate blood which is a negatively charged sol.
It is not true; ferric chloride is ionic and gets into the blood stream.
It is true, coagulation takes place because of formation of negatively charged sol with Cl−.
Solution
It is true, Fe3+ ions coagulate blood which is a negatively charged sol.
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