Multiple choice

Which of the following is not a non-conventional source of energy?

  1. Solar-energy

  2. Wind-energy

  3. Coal

  4. Hydel energy

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coal is not a non-conventional source of energy.  Coal is very widely used as a source of energy. It provides employment to over 7 lakh workers. Its reserves are substantial. Coal has a favour over other fuels as it can be converted into other forms of energy.