The calorific value of hydrogen is highest among fuels.
Which of the following fuels has the highest calorific value ?
Kerosene, Wood, Hydrogen, Cow-dung cakes, LPG
Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with the highest calorific value first): Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane