Appeared in: 2022 (3 sets)
Answer the following questions on the basis of the given figure:
(a) Define the process depicted in the above figure.
(b) Can this process be used in the coagulation of the lyophobic sols?
(c) What is coagulation?
OR
Define the following terms:
(a) Adsorption
(b) Lyophobic sol
(c) Multimolecular colloid
✓ Verified CBSE Marking Scheme
Official Evaluation Steps & EL10 Insight
CBSE CLASS 12 CHEMISTRY EXAMINATION
Subject: Surface Chemistry | Max Marks: 3
MAIN QUESTION SOLUTION
(a) Definition of the depicted process (Electrophoresis):
Step 1 (Definition & Governing Law): [1 Mark]
The process shown in the figure is Electrophoresis (or Cataphoresis).
Definition: Electrophoresis is defined as the migration of charged colloidal particles towards the oppositely charged electrode under the influence of an applied electric field/potential.
(