[Hint : (i) Multimolecular colloids formed by aggregation of small atoms or molecules. Example, gold sol, sulphur sol.
(ii) Macromolecular colloids formed by dispersing macromolecules having colloidal size in proper dispersion medium. Example, protein, starch colloid.
(iii) Associated colloids are formed by aggregation of particles at higher concentration to colloidal range. Example, micelles.]
