Question

Which one of the following methods is commonly used for the destruction of colloids?

• A. Dialysis
• B. Condensation
• C. Filtration by animal membrane
• D. Addition of an electrolyte

Answer 1

The correct option is D Addition of an electrolyte

Methods used for the destruction of colloids are as follows:
1. Electrophoresis
2. Mixing two oppositely charged sols
3. Boiling
4. Persistent dialysis
Addition of electrolyte brings in coagulation of the sol.

Hence, option D is the correct answer.