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InterviewSolution
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Which of the following statements is incorrect?A. In a lyophilic sol, the presence of an electrolyte is not essential for stabilityB. Lyophilic sols are reversibleC. In Lyophobic sols, colloidal particles do not migrate in an electric fieldD. Ultramicroscopic imaging of lyophobic sols shows particles in motion |
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Answer» Correct Answer - C In lyophobic sols colloidal particules migrate in one direction in an electric help due to electeical charges An important charactersitic of lyophilic colloids is that if the dispersion medium is separated colloids is that if the disersion medium is separted from the dispersed phase say, by evaportion the sol can be reconstructed by simply remixing with the dispersion medium that is why these sols are also called reversible sols furthermore these sols are quite stable and cannot be easily coagulate |
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