Question

Which one of the following is a non-renewable source of energy?

• A. Solar energy
• B. Hydel power
• C. Wind energy
• D. Thermal power

Hint:

Thermal power depends on fossil fuels, which are exhaustible and cause pollution—making renewable energy a cleaner alternative.

Answer 1

The Correct Option is D

Step 1: Understanding renewable and non-renewable sources.
Renewable energy sources are those that can be replenished naturally, such as solar, wind, and hydel power. Non-renewable sources, however, depend on finite resources like coal and oil.
Step 2: Analyzing the options.
(A) Solar energy: Incorrect. Solar energy is renewable and comes from sunlight.
(B) Hydel power: Incorrect. It is renewable as it uses the energy of flowing water.
(C) Wind energy: Incorrect. It is a renewable source generated from wind.
(D) Thermal power: Correct. Thermal power plants use fossil fuels (coal, oil, or gas) to produce electricity, which are non-renewable resources.
Step 3: Conclusion.
Therefore, the non-renewable source of energy is Thermal power.