JCECE Engineering JCECE Engineering Solved Paper-2012

  • question_answer
    Colloidal solutions of gold, prepared by different methods are of different colours because of

    A)  variable valency of gold

    B)  different concentration of gold particles

    C)  impurities produced by different methods

    D)  different diameters of colloidal gold particles

    Correct Answer: D

    Solution :

    Colour of the colloidal sol depends upon the particle size of dispersed phase.


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