Water is adsorbed on colloidal molecules by

Options

A. Exosmosis
B. Imbibition
C. Endosmosis
D. Plasmolysis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the process by which water is adsorbed on colloidal molecules. It's important to clarify the terms involved, particularly "adsorption" and "colloidal molecules."

2. **Analyzing the Options**:
- **Exosmosis**: This process refers to the movement of water from a region of higher concentration to a region of lower concentration. This is not the correct process for adsorption of water onto colloidal molecules.

- **Embition**: This is the correct process. It refers to the adsorption of water by solid particles without forming a solution. In this context, it describes how water molecules adhere to the surface of colloidal particles.

- **Endosmosis**: This process is the movement of water from a region of lower solute concentration to a region of higher solute concentration. This is also not the correct answer for the adsorption process.

- **Plasmolysis**: This term describes the shrinkage of the cell due to loss of water. It is not related to the adsorption of water on colloidal molecules.

3. **Identifying the Correct Answer**: Based on the analysis, the correct answer is **embition**, as it specifically refers to the adsorption of water onto solid particles, which is what occurs with colloidal molecules.

4. **Conclusion**: Water is adsorbed on colloidal molecules by the process of **embition**.

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