Among the following fuels, which has the least calorific value:
CNG, Petrol, Cow Dung Cake, Wood.
Cow dung cake
The correct option is A Cow dung cake Calorific value is the amount of heat liberated by combustion of one kilogram of a substance. FuelCalorific value (KJ/Kg)Cow dung cake7000Wood18000Petrol45000CNG50000 Among these, the fuel with the least calorific value is cow dung cake.