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Ferric chloride is applied to stop bleeding because

Options

  1. ABlood absorbs FeCl 3 and forms a complex.
  2. BCl - ions cause coagulation of blood.
  3. CFe 3 + ions coagulate blood which is a negatively charged sol.
  4. DFeCl 3 reacts with the constituents of blood which is a positively charged sol.

Correct answer

C. Fe 3 + ions coagulate blood which is a negatively charged sol.

Step-by-step solution

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 Fe 3 + 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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