Assertion: Colloidal solution exhibit Tyndall effect while true solution particles.
Reason: Because the size of the colloidal particles is large enough to scatter light as compared to size of the true solution particles.

Options

A. STATEMENT -1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-10
B. STATEMENT -1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-11
C. STATEMENT-1 is true, STATEMENT-2 is false
D. STATEMENT-1 is false, STATEMENT-2 is true

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that colloidal solutions exhibit the Tyndall effect while true solutions do not. The Tyndall effect is the scattering of light by particles in a colloid or particles in a very fine suspension.

2. **Understanding the Reason**: The reason provided explains that the size of colloidal particles is large enough to scatter light, unlike the particles in true solutions.

3. **Particle Size Comparison**:
- Colloidal particles typically range in size from 1 nanometer to 1 micrometer (1000 nanometers).
- True solution particles, on the other hand, are usually smaller than 1 nanometer and cannot scatter light effectively.

4. **Tyndall Effect Explanation**: The Tyndall effect occurs when light passes through a colloidal solution and is scattered by the larger particles, making the path of the light beam visible. In true solutions, because the particles are too small, they do not scatter light, and thus the Tyndall effect is not observed.

5. **Conclusion**: Both the assertion and the reason are true. The reason accurately explains why the assertion holds true. Therefore, the correct interpretation is that both statements are correct, and the reason is a valid explanation for the assertion.

**Final Answer**:
- Assertion: True
- Reason: True
- The reason correctly explains the assertion.

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