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NEET Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Self Evaluation Test - Surface Chemistry

  • question_answer
    Arrange the following electrolytes in the increasing order of coagulating power for ferric hydroxide sol
    \[N{{a}_{3}}P{{O}_{4}}\] \[KCl\] \[{{K}_{2}}S{{O}_{4}}\]   \[NaCI\]
    I       II   III IV

    A) I<II<III<IV                  

    B) II=IV<III<I

    C) II=IV<I<III                  

    D) II=III<IV=I

    Correct Answer: B

    Solution :

    [b] Ferric hydroxide sol is positively charged and hence anions would be effective in causing coagulation. Greater the valence of the effective ion, more will be its coagulating power.


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