Question

Adsorption is a process in which a substance accumulates on the ............. of the other substance.

• A. surface
• B. core
• C. membrane
• D. plasma

Answer 1

The correct option is A surface

Adsorption is a process in which a substance accumulates on the surface of the other substance. It occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent) forming a molecular or atomic film (the adsorbate). It is different from absorption in which a substance diffuses into a liquid or solid to form a solution. Thus adsorption is surface phenomenon whereas absorption is bulk property.