Question

Observe the given image of the `Biogas (Gobar Gas) Plant' and identify its benefit:

• A. It increases the use of chemical fertilizers.
• B. It is a clean, non-conventional source of energy.
• C. It causes high air pollution.
• D. It is an expensive urban energy source.

Hint:

Biogas plants provide a dual benefit: \textbf{Energy} (biogas for cooking/lighting) + \textbf{Manure} (organic slurry for farming). This makes them highly suitable for rural India's sustainable development.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The image shows a Biogas plant, which converts organic waste (like animal dung) into methane gas and slurry.
Step 2: Detailed Explanation:
Biogas is a renewable (non-conventional) energy source.
It is considered "clean" because it burns with less smoke compared to traditional fuels like firewood or coal, reducing indoor air pollution.
It utilizes waste efficiently and produces nutrient-rich slurry that acts as an organic fertilizer, reducing the need for chemical fertilizers (making option A incorrect).
It is highly cost-effective and specifically suitable for rural areas rather than being an "expensive urban source" (making option D incorrect).
Step 3: Final Answer:
The primary benefit illustrated is that it serves as a clean, non-conventional energy source.