Question

In which of the following diffusion does not occur?

• A. When seen under microscope, the colloidal particles in a colloid are seen to be moving in a random fashion.
• B. When seen under microscope, the colloidal particles in a colloid are seen to be moving in a fixed fashion.
• C. When seen under microscope, the colloidal particles in a mixture are seen to be moving in a fixed fashion.
• D. When seen under microscope, the colloidal particles in a mixture are seen to be moving in a random fashion.

Answer 1

The correct option is A

When seen under microscope, the colloidal particles in a colloid are seen to be moving in a random fashion.

Suspension is a heterogeneous mixture of small insoluble particles in a solvent. Diffusion does not occur in suspension.