CHEMISTRY · Single correct · CBSE · Chemistry · Is Matter Around Us Pure? · Is Matter Around Us Pure?
Problem
Select the correct statements about colloids :
- (i) soaps are anionic class of detergents.
- (ii) butter is water dispersed in fat and milk is fat dispersed in water
- (iii) flocculation value is reported in milli mol/litre
- (iv) during electro osmosis, dispersion medium moves in presence of electric field
- (v) special methods are required for preparation of hydrophilic colloidal solution
(1) (ii), (iii) and (iv) only
(2) all of these
(3) (i), (ii), (iii) and (iv) only
(4) (ii), (iii), (iv) and (v) only