Question

Which of the following statements are correct?

1. On the application of an electric field, the particles of lyophobic sol may move either direction or not move at all.

2. The surface tension of lyophobic sols is similar to that of the dispersion medium.

3. Electro-osmosis is the movement of the particles of dispersion medium under the influence of an electric field.

• A. 1,2 and 3
• B. 1 and 3
• C. 2 and 3
• D. 1 and 2

Answer 1

The correct option is C 2 and 3

Surface tension of lyophobic sols is similar to that of the dispersion medium, therefore they do not prefer to convert into colloidal solution hence they are lyophobic and electro-osmosis is the phenomenon involving the migration of the dispersion medium and not the colloidal particles under the influence of an electric field.