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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Colloids Emulsion, Gel and Their properties with application

  • question_answer
    Which of the following substances gives a positively charged sol                                [CPMT 1983, 84; MP PMT 1990; MP PET 1992]

    A)                 Gold     

    B)                 A metal sulphite

    C)                 Ferric hydroxide              

    D)                 An acidic dye

    Correct Answer: C

    Solution :

                    \[Fe{{(OH)}_{3}}\]gives a positively charged  sol as it adsorbs \[F{{e}^{3+}}\] ions from \[FeC{{l}_{3}}\]solution.


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