Which of the following is a non-biodegradable pollutant ?

Options

A. DDT
B. Sewage
C. Plant leaves
D. Domestic wastes

Answer

To determine which of the following is a non-biodegradable pollutant, we need to analyze each option provided:

1. **DDT (Dichlorodiphenyltrichloroethane)**:
- DDT is a synthetic pesticide that was widely used for agricultural purposes. It is known for its persistence in the environment and cannot be easily broken down by natural organisms such as bacteria. This makes DDT a non-biodegradable pollutant.

2. **Sewage**:
- Sewage is primarily organic matter that can be broken down by microorganisms. Therefore, it is considered a biodegradable pollutant.

3. **Plant Leaves**:
- Plant leaves are organic materials that decompose naturally through the action of bacteria and fungi. Thus, they are also biodegradable.

4. **Domestic Waste**:
- Domestic waste includes various organic materials that can be decomposed by natural processes. Therefore, it is classified as biodegradable.

Based on the analysis above, the only non-biodegradable pollutant among the options is **DDT**.

**Final Answer**: DDT (Dichlorodiphenyltrichloroethane) is a non-biodegradable pollutant.

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