Which of the following are the examples of non - degradable pollutants ?
I. DDT
II. Nuclear wastes
III. Plastic materials
Select the correct option

Options

A. Both I and II
B. Both II and III
C. I,II and III
D. Both I and III

Answer

To determine which of the given options are examples of non-degradable pollutants, we need to analyze each option based on the definition of non-degradable pollutants.

### Step-by-Step Solution:

1. **Understanding Non-Degradable Pollutants**:
Non-degradable pollutants are substances that cannot be broken down by natural processes into simpler, harmless substances. They persist in the environment for a long time and can accumulate, causing harm to ecosystems.

2. **Analyzing Option I: DDT**:
- DDT (Dichloro-Diphenyl-Trichloroethane) is a synthetic pesticide that is known for its persistence in the environment. It does not easily break down and can accumulate in the food chain.
- **Conclusion**: DDT is a non-degradable pollutant.

3. **Analyzing Option II: Nuclear Wastes**:
- Nuclear wastes are byproducts of nuclear reactions and contain radioactive materials that can remain hazardous for thousands of years. They do not decompose naturally and require special disposal methods.
- **Conclusion**: Nuclear wastes are non-degradable pollutants.

4. **Analyzing Option III: Plastic Materials**:
- Plastics are synthetic materials that are highly resistant to degradation. They can take hundreds to thousands of years to break down and can cause significant environmental issues.
- **Conclusion**: Plastic materials are non-degradable pollutants.

5. **Final Conclusion**:
- Since all three options (I, II, and III) are examples of non-degradable pollutants, the correct answer is that all of them are non-degradable pollutants.

### Answer:
All of the above (I, II, and III) are examples of non-degradable pollutants.