Brownian movement can be seen easily in case of

Options

A. true solution
B. colloidal solution
C. suspension
D. all of these

Answer

B

Explanation

Brownian movement is too fast to be seen in true solution on account of small size of solute particles and is too slow to be seen in a suspension on account of larger size of suspended particles.
Brownian movement provides a direct demonstration of ceaseless motion of molecules as postulated by kinetic theory. It also counters the force of gravitey acting on colloidal particles and hence helps in providing stabIlity to colloidal sols by not allowing them to settle down.