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CMC Medical CMC-Medical VELLORE Solved Paper-2008

  • question_answer
    Which one of the following acts as the best coagulating agents for ferric hydroxide sol?

    A)  Magnesium chloride

    B)  Hydrochloric acid

    C)  Aluminium chloride

    D)  Potassium oxalate

    E)  Potassium ferricyanide

    Correct Answer: E

    Solution :

                    Potassium ferricyanide acts as the best coagulating agent for ferrichydroxide sol due to higher valency of ferricyanide ion \[{{[Fe{{(CN)}_{6}}]}^{4-}}\]. (Hardy-SchuIze rule)


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