The turbidity of a polymer solution measures:

Options

A. Light absorbed by the solution
B. Light transmitted by the solution
C. Light scattered by the solution
D. None of the above.

Answer

To solve the question regarding what the turbidity of a polymer solution measures, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Turbidity**:
- Turbidity refers to the cloudiness or haziness of a fluid. It is caused by the presence of numerous small particles that are usually not visible to the naked eye.

2. **Identifying the Cause of Turbidity**:
- The cloudiness in a polymer solution arises from the scattering of light by these small solid particles suspended in the fluid.

3. **Light Interaction with the Polymer Solution**:
- When light passes through a polymer solution, it interacts with the particles present in the solution. This interaction results in the scattering of light.

4. **Measuring Turbidity**:
- The turbidity of the solution is quantified by measuring the amount of light that is scattered by the particles in the solution.

5. **Conclusion**:
- Therefore, the turbidity of a polymer solution measures the light scattered by the solution, not the light that is absorbed or transmitted.

### Final Answer:
The turbidity of a polymer solution measures the light scattered by the solution.