Question

Why is biogas superior to animal dung as a fuel?

Answer 1

Biogas has a high calorofic value than animal dung
Biogas will be easily burned but cow dung do not

Answer 2

Why is biogas superior to animal dung as a fuel?

1. It doesn't leave any ash after burning.
2. It burns with smokeless flame.
3. It has higher calorific value than dung-cake, wood & coal.
4. It is much cheaper than most of the common fuel.
5. Use of Biogas as a fuel will save forests & fossil fuels.