The cause of Brownian movement which is not shown by true solutions or suspensions is due to

Options

A. unbalanced bombardment of particles by molecules of the dispersion medium
B. attractive forces between dispered phase and dispersion medium
C. larger size of the particles due to which they keep colliding and settling down
D. conversion currents formed in the sol.

Answer

A

Explanation

The colloidal particles are in a continuous zig-zag motion due to unbalanced bombardment of the particles by molecules of the dispersion medium.