Question

Which property of colloids isnot dependent on the charge on colloidal particles?

• A. Electrophoresis
• B. Electro–osmosis
• C. Tyndall effect
• D. Coagulation

Answer 1

The Correct Option is C

The question asks which property of colloids is not dependent on the charge of colloidal particles. Let's analyze each of the given options:

1. Electrophoresis: This is the movement of colloidal particles towards an electrode under the influence of an electric field. Since this movement is due to the charge on the particles, electrophoresis is dependent on the charge.
2. Electro–osmosis: This phenomenon occurs when an electric field causes the dispersion medium (liquid) to move, due to the charged nature of the colloidal particles. Hence, it is also dependent on the charge.
3. Coagulation: This is the process by which colloidal particles clump together to form larger aggregates, often due to neutralization of their charge. Thus, coagulation is influenced by the particle charge.
4. Tyndall Effect: This effect involves the scattering of light by colloidal particles, making the path of the light visible. It is due to the size of the particles, not their charge. Therefore, the Tyndall effect is independent of the charge on colloidal particles.

In summary, the property that is not dependent on the charge on colloidal particles is the Tyndall effect. Therefore, the correct option is Tyndall effect.