Listen NCERT Audio Books to boost your productivity and retention power by 2X.
Arrange the following fuels in the order of decreasing calorific values (keeping the fuels with highest calorific value first):
Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane
Hydrogen gas>Methane> Petrol > Kerosene > Biogas > Wood
Hydrogen has the highest calorific value where as wood has the lowest calorific value.