Besides dung, the weed which can be used in biogas production is

Options

A. Hydrilla
B. Solanum nigrum
C. Eichhornia crassipes
D. Parthenium hysterophorus

Answer

**Step-by-Step Solution:**

1. **Understanding Biogas Production**: Biogas is a renewable energy source produced through the anaerobic digestion of organic matter. Common substrates for biogas production include animal dung, agricultural waste, and certain types of weeds.

2. **Identifying the Question**: The question asks for a type of weed that can be used in biogas production, besides dung.

3. **Analyzing the Options**: The options provided are:
- A) Hydrilla
- B) Solanum nigram
- C) Econium Crassipus
- D) Parthenium Hysteroporus

4. **Researching Each Option**:
- **Hydrilla**: An aquatic weed, but not commonly used for biogas.
- **Solanum nigram**: A type of nightshade, not typically associated with biogas production.
- **Econium Crassipus**: An aquatic weed known for its high nitrogen content, which aids in biogas production.
- **Parthenium Hysteroporus**: A weed that can be problematic in agriculture and is not primarily used for biogas.

5. **Selecting the Correct Answer**: Based on the analysis, the weed that can be used in biogas production, besides dung, is **Econium Crassipus** (option C).

6. **Conclusion**: The correct answer to the question is **C) Econium Crassipus**.

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