Question

Which of the following statement is correct about the Brownian motion?

• A. Temperature fluctuations within the liquid phase.
• B. Attraction and repulsion between charges on the colloidal particles.
• C. Impact of the molecules of the dispersion medium on the colloidal particles.
• D. Convective currents.

Answer 1

The correct option is C Impact of the molecules of the dispersion medium on the colloidal particles.

A colloid is a heterogeneous system in which one substance is dispersed (dispersed phase) as very fine particles in another substance called dispersion medium. The solution and colloid essentially differ from one another by particle size. Brownian motion describes the random movement of microscopic particles suspended in a liquid or gas. The dispersed phase particles bear continuous collisions with dispersion medium to show irregular motion in solution state.