Define the following terms with an example in each case:
(i) Macromolecular sol
(ii) Peptization
(iii) Emulsion

Explanation

(i) Macromolecular sol : When substances which possess very high molecular masses are dispersed in suitable dispersion medium, the colloidal solution formed are called macromolecular colloids.
(ii) Peptization : Process of conversion of a fresh precipitate into sol by shaking it with disperion medium-in the presence of electrolyte is called peptisation.