Choose the biodegradable pollutant out of the following.

Options

A. DDT
B. Polyglycolic acid
C. Alkyl benzene sulphonate
D. Mercury

Answer

To determine the biodegradable pollutant from the given options, we need to analyze each one based on its ability to decompose into harmless substances through natural processes, particularly by the action of microorganisms.

### Step-by-Step Solution:

1. **Understanding Biodegradable Pollutants**:
- Biodegradable pollutants are substances that can be broken down by natural processes, primarily by microorganisms like bacteria. They do not persist in the environment and eventually convert into simpler, harmless substances.

2. **Analyzing the Options**:
- **DDT (Dichloro-Diphenyl-Trichloroethane)**:
- DDT is a synthetic pesticide that is known for its persistence in the environment and does not easily decompose. It is classified as a non-biodegradable pollutant.
- **Polyglycolic Acid**:
- Polyglycolic acid (PGA) is a biodegradable thermoplastic polymer. It is known to break down into harmless substances over time, making it a biodegradable pollutant.
- **Alkylbenzene Sulfonate**:
- Alkylbenzene sulfonates are surfactants that can be persistent in the environment and may not break down easily, thus are considered non-biodegradable.
- **Mercury**:
- Mercury is a heavy metal that is highly toxic and does not decompose. It is classified as a non-biodegradable pollutant.

3. **Conclusion**:
- After analyzing all the options, the only biodegradable pollutant among the choices is **Polyglycolic Acid**.

### Final Answer:
The biodegradable pollutant is **Polyglycolic Acid** (Option B).

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