Question

Which of the following methods is used for sol destruction?

• A. Condensation
• B. Dialysis
• C. Diffusion through animal membrane
• D. Addition of an electrolyte

Answer 1

The correct option is D Addition of an electrolyte

When an electrolyte is added to the sol, colloidal particles are neutralized by the adsorption of oppositely charged ions formed from the dissociation of the electrolyte.

These neutral particles will eventually get aggregated resulting in the formation of a precipitate.

Therefore the sol will be destroyed by the addition of an electrolyte.

Hence option D is correct.