Which of the following is not represented by sols?

Options

A. Adsorption
B. Tyndall effect
C. Flocculation
D. Paramagntism

Answer

To solve the question "Which of the following is not represented by sols?", we will analyze each of the given options in relation to sols (colloidal solutions).

### Step 1: Understand the concept of sols
Sols are colloidal solutions where solid particles are dispersed in a liquid. They exhibit unique properties such as the Tyndall effect, adsorption, and flocculation.

### Step 2: Analyze the options
1. **Adsorption**: This is a process where molecules from a gas or liquid adhere to a solid surface. In the context of sols, adsorption is a key characteristic, as sol particles can adsorb other substances onto their surface. Thus, adsorption is represented by sols.

2. **Tyndall Effect**: This phenomenon occurs when light is scattered by colloidal particles in a solution. It is a characteristic property of colloids, including sols. Therefore, the Tyndall effect is also represented by sols.

3. **Flocculation**: This refers to the process where fine particulates agglomerate into a floc or flake, which is common in colloidal systems. Flocculation is relevant to sols as it describes how particles can cluster together. Hence, flocculation is represented by sols.

4. **Paramagnetism**: This is a property of materials that are attracted to a magnetic field due to the presence of unpaired electrons. It is not a characteristic of colloidal solutions or sols. Therefore, paramagnetism is not represented by sols.

### Conclusion
Based on the analysis, the option that is not represented by sols is **paramagnetism**.

### Final Answer
**Paramagnetism** is not represented by sols.

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