Question

An example for lyophilic colloid is:

• A. Colloidal solutions of metal
• B. Sulphur in water
• C. Gelatin
• D. $Fe{\left(OH\right)}_3$

Answer 1

The correct option is C Gelatin

Gelatin is an example for lyophilic colloid. There is strong affinity between disperse phase and dispersion medium. It is a reversible colloid. The sols of proteins, starch in water, rubber in benzene, cellulose nitrate or cellulose acetate in acetone are lyophilic colloids.
Sulphur in water, colloidal solutions of metal such as gold or silver are lyophobic colloids.