. Which of the following has the highest calorific value
A: Coal gas
B: Water gas
C: Producer gas
D: Carbon dixode gas
Calorific value is the amount of heat energy present in food or fuel and is determined by the
complete combustion of a given quantity at constant pressure and under normal conditions.
It is also called calorific value. The unit of calorific value is the kilojoule per kilogram or the
The calorific value of coal gas is 18-20 megajoules per cubic metre.
The calorific value of water gas is around 11 megajoules per cubic metre.
The calorific value of producer gas is around 5.8 megajoules per cubic metre.
And the calorific value of carbon dixode gas will be least because it is a mixture of gases.
The correct option is A: Coal gas