Question 3 of 6beginner💡 UnderstandMCQ1 mark

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

Exercise: EXERCISES | Q: 1(iii)
For More Understanding

Explanation

Option (C) Thermal is the correct answer. According to the textbook context, mineral fuels like coal, petroleum and natural gas (known as fossil fuels) are conventional sources of energy that are exhaustible resources. Thermal power is generated using these fossil fuels, particularly coal, making it a non-renewable source. In contrast, the context clearly states that solar, wind, and hydro (hydel) are renewable energy sources that are inexhaustible and sustainable. The text explicitly mentions that 'Sustainable energy resources are only the renewable energy sources like solar, wind, hydrogeothermal and biomass' and that wind energy is an 'inexhaustible source of energy.'

Solution Steps

  1. Step 1: Identify which energy sources are mentioned as renewable in the context - solar, wind, and hydro are explicitly stated as renewable/inexhaustible.

  2. Step 2: Identify which energy sources use exhaustible raw materials - fossil fuels like coal, petroleum, and natural gas are stated as exhaustible.

  3. Step 3: Connect thermal energy to fossil fuels - thermal power plants primarily use coal (a fossil fuel) to generate electricity, making it non-renewable.

  4. Step 4: Conclude that Thermal (Option C) is the only non-renewable source among the given options.

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