The process of passing of a precipitate into colloidal solution on adding an electrolyte is called

Options

A. Dialysis
B. Peptization
C. Electrophoresis
D. Electro-osmosis

Explanation

To solve the question regarding the process of passing a precipitate into colloidal solution upon adding an electrolyte, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- First, we need to understand what a precipitate and a colloidal solution are. A precipitate is a solid that forms and settles out of a liquid mixture, while a colloidal solution is a mixture where tiny particles are dispersed throughout a medium.

2. **Identifying the Process**:
- The question specifically asks about the process that converts a precipitate into a colloidal solution when an electrolyte is added.

3. **Analyzing the Options**:
- **Dialysis**: This is a method used to separate small molecules from larger ones in a solution, not related to converting precipitates.
- **Peptization**: This is the process of converting a precipitate into a colloidal solution by adding an electrolyte. This is the key process we are looking for.
- **Electrophoresis**: This refers to the movement of charged particles in a fluid under the influence of an electric field, which does not directly relate to the conversion of precipitates.
- **Electroosmosis**: This is the movement of the dispersion medium under an electric field, not the conversion of precipitates.

4. **Conclusion**:
- Based on the analysis, the correct answer is **peptization**, as it directly describes the conversion of a precipitate into a colloidal solution through the addition of an electrolyte.

### Final Answer:
The process of passing a precipitate into colloidal solution on adding an electrolyte is called **peptization**.