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12th Class Chemistry Sample Paper Chemistry Sample Test Paper-5

  • question_answer
    Why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding?                        [1]

    Answer:

    Blood is a colloidal solution of an albuminoid substance. The stypic action of alum and ferric chloride solution is due to the coagulation of blood forming a clot which stops further bleed. KCI with monovalent cationis least effective in coagulation.                       [1]


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