Which of the following method is used for coagulation of the sol?
Show Hint
- By mixing two oppositely charged sols.
- By electrophoresis.
- By addition of electrolytes.
- All of the above.
The Correct Option is D
Solution and Explanation
Step 1: Understand the methods of coagulation. Coagulation of a sol refers to the process of destabilizing the colloidal particles, causing them to aggregate and settle. The following methods are commonly used: 1. Mixing two oppositely charged sols: When two sols with opposite charges are mixed, the particles neutralize each other's charges, leading to coagulation. 2. Electrophoresis: In electrophoresis, colloidal particles migrate towards oppositely charged electrodes. When they reach the electrode, they lose their charge and coagulate. 3. Addition of electrolytes: Adding electrolytes to a sol neutralizes the charge on the colloidal particles, reducing repulsion and causing coagulation.
Step 2: Analyze the Option.
- Option A: Mixing two oppositely charged sols is a valid method of coagulation.
- Option B: Electrophoresis is a valid method of coagulation.
- Option C: Addition of electrolytes is a valid method of coagulation.
Since all three methods are correct, the correct answer is All of the above.
Conclusion: All the given methods (A, B, and C) are used for the coagulation of sols.
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