Question

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

Options

• Hydel

• Solar

• Thermal

• Wind power

Answer 1

Thermal

Explanation:

Thermal power is a non-renewable energy source because it is generated by burning fossil fuels such as coal, oil, and natural gas. These reserves take millions of years to form beneath the earth and cannot be replaced once they are completely depleted. In contrast, hydel, solar, and wind power are renewable sources because their natural supply is inexhaustible.