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NDA 1 2025 GAT, question 147

Topic: Physics

Q147

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

  1. (a) Petroleum
  2. (b) Natural Gas
  3. (c) Tidal energyCorrect answer
  4. (d) Coal

Solution.

Answer: (c) Tidal energy

  1. Tidal energy uses the periodic movement of seawater caused mainly by the Moon’s and Sun’s gravitational effects.
  2. It is classified as a non-conventional renewable source.
  3. Petroleum, natural gas and coal are conventional fossil fuels.