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The colloidal solutions of gold prepared by different methods have different colors due to :A. difference in the size of colloidal particlesB. the fact that gold exhibits variable valancyC. Different concentration of goldD. Presence of different types of foreign particles |
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Answer» Correct Answer - A The colour of any sol depends on its particle size and shape. Au sol is red if particles are spherical and blue if they are disc like. |
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