Assertion :Alum is used to stop blood from a cut. Reason: Blood is negative sol and sol particles are coagulated more efficiently by Al3+ ions.
A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C Assertion is correct but Reason is incorrect D Assertion is incorrect but Reason is correct
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Solution
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Alum is used to stop blood from a cut. It acts as a hemostatic agent, allowing the blood clot to form. The high ionic strength promotes flocculation of the blood and the astringent chemical causes local vasoconstriction. Thus, blood is negative sol and sol particles are coagulated more efficiently by Al3+ ions.
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