Question

Which of the following statements does not show correct difference between adsorption and absorption?

• A. In adsorption, the substance is concentrated only at the surface while in absorption it is uniformly distributed in the bulk
• B. Adsorption is instantaneous while absorption is a slow process
• C. A substance can be adsorbed as well as absorbed simultaneously and the process is called sorption
• D. Only gases are adsorbed while solids and liquids are absorbed

Answer 1

Answer: (D)

Only gases are adsorbed while solids and liquids are absorbed

adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.

The phenomenon of adsorption strictly refers to the existence of a higher concentration of any particular component at the surface of a liquid or a solid phase that is present in the bulk or interior.
For example, five types of interfaces can exist (i) gas-solid (ii) liquid-solid (iii) liquid-liquid, (iv) solid – solid and gas-solid.

So option d is not correct