Power and manure both are provided by
Last updated Jun 9, 2026
Correct Answer:
Option C —
Biogas plants
A biogas plant uses organic waste—such as cattle dung, agricultural residue, and food waste—and breaks it down using bacteria in an oxygen-free environment (a process called anaerobic digestion). This process yields two highly useful products:Power (Biogas): The process generates biogas (primarily methane and carbon dioxide), which can be burned directly for cooking and heating, or used to fuel a generator to produce electricity.
Manure (Digestate): The leftover organic slurry that remains after the gas is extracted is incredibly rich in nutrients like nitrogen, phosphorus, and potassium. It makes an excellent, eco-friendly organic manure for farming.
None of the other options produce manure:
Nuclear plants produce electricity and radioactive waste.
Thermal plants produce electricity and air pollutants/fly ash.
Hydroelectric plants produce electricity using the movement of water.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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