Freshly prepared precipitate sometimes gets converted to colloidal solution by _________ .

Options

A. coagulation
B. electrolysis
C. diffusion
D. peptisation

Explanation

To solve the question "Freshly prepared precipitate sometimes gets converted to colloidal solution by _________," we need to analyze the options provided and understand the processes involved in colloidal chemistry.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the process that converts a freshly prepared precipitate into a colloidal solution.

2. **Analyzing the Options**:
- **Coagulation**: This is the process where colloidal particles aggregate to form larger particles, leading to precipitation. This is not the correct answer since we are looking for a process that converts precipitate to colloidal solution.

- **Electrolysis**: This refers to the breakdown of a substance through the application of electrical current. It is not directly related to the conversion of precipitate to colloidal form, so this is also not the correct answer.

- **Diffusion**: This is the movement of particles from an area of higher concentration to an area of lower concentration. While diffusion is a fundamental process in solutions, it does not specifically relate to the conversion of precipitate to colloidal solution.

- **Peptization**: This is the correct answer. Peptization is the process of converting a precipitate into a colloidal solution by shaking it with a dispersing medium in the presence of a small amount of electrolyte. During peptization, the precipitate absorbs ions from the electrolyte, which imparts a charge to the particles and helps them disperse into smaller colloidal particles.

3. **Conclusion**: Based on the analysis, the correct answer to the question is **peptization**.

### Final Answer:
Freshly prepared precipitate sometimes gets converted to colloidal solution by **peptization**.

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