JEE Main 2023ChemistrySurface ChemistryEasyMCQ

JEE Main 2023 — Surface Chemistry Question with Solution

JEE Main 2023 (10 Apr Shift 2)

Question

Ferric chloride is applied to stop bleeding because

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Correct answer
CFe3+ ions coagulate blood which is a negatively charged sol.

Step-by-step explanation

Ferric chloride is a hemostatic agent, which means that it can be used to stop bleeding by promoting the coagulation of blood. Blood is a colloidal solution of an albuminoid substance and can be coagulated to form clot by applying Fe3+ ion on the open wound. Thus, bleeding caused by a razor during shaving can be treated by rubbing potash alum against the cut which helps in the coagulation of the blood by sealing the blood vessels.

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About this question

This is a previous-year question from JEE Main 2023, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.