Multiple choice

There is a great affinity between the dispersed phase & the dispersion medium of:

  1. lyophobic colloids

  2. macromolecular colloids

  3. lyophilic colloids

  4. multimolecular colloids
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C Correct answer
Explanation

In this type of colloids sols, the dispersed phase has great attraction for the dispersion medium. In such colloids, the dispersed phase does not precipitate easily and the sols are quite stable. If the dispersion medium is separated from the dispersed phase, the sol can be reconstituted by simply remixing with the dispersion medium. Hence, these sols are called reversible sols. Examples of lyophilic sols include sols of gum, gelatine, starch, proteins and certain polymers in organic solvents.

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