Firewood is a conventional fuel

Firewood is a conventional fuel. List any four reasons for replacing it with alternate sources of energy.


  • Wood has low calorific value as compared to other sources of fuel.
  • It causes air pollution on burning.
  • Cutting down of trees causes depletion of forest leading to imbalance in nature.
  • Only 8-10% energy of burning firewood is utilised and the remaining is wasted.