Question

Match various processes in surface chemistry from List 1 with their definition from List 2.

Answer 1

In surface chemistry,

1. Dissipation/ Desorption is the process of removing an adsorbed substance from a surface on which it is absorbed.

2. Absorption is a process in which the substance (adsorbate) is uniformly distributed throughout the bulk.

3. Sorption is a process where both the phenomenon of adsorption and absorption take place simultaneously.

4. Physisorption is a type of adsorption where weak Van der Waals forces act between the adsorbate and adsorbent.

Thus the correct combination of an answer will be A-2, B-3, C-4, D-1