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

  • question_answer
    Which of the following is most effective in causing the coagulation of ferric hydroxide sol?

    A) KCl

    B) \[KN{{O}_{3}}\]

    C) \[{{K}_{2}}S{{O}_{4}}\]                     

    D) \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]

    Correct Answer: D

    Solution :

    [d] \[Fe{{\left( OH \right)}_{3}}\] is positive sol. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]will provide \[{{[Fe{{(CN)}_{6}}]}^{3-}}\] for coagulation having highest magnitude of \[-ve\] charge among given options.


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