CHEMISTRY · Single correct · CBSE · Chemistry · Is Matter Around Us Pure? · Is Matter Around Us Pure?
Problem
Select the correct statements :
- (i) gold and As2S3 solution are multimolecular colloids and hydrophobic sols.
- (ii) cleansing action of soap is due to adsorption of oily, dirt and greasy material at hydrophobic centres of soap
(1) (ii), (iii), (iv) and (v) only
(2) (i), (ii), (iii) and (iv) only
(3) (i), (ii), (iii) and (v) only
(4) all of these