Question

The amount of heat energy produced on complete combustion of 1 Kg of a fuel is called its __________

Answer 1

• Calorific value: The amount of heat produced by complete burning per unit mass of fuel is known as the calorific value of that fuel.
• The unit of calorific value is ${\mathrm{kJKg}}^{-1}$.
• The higher the calorific value of a fuel, the more heat it produces when burned. The higher the calorific value of a fuel, the better fuel it is.

Hence, the amount of heat energy produced on complete combustion of 1 Kg of a fuel is called its calorific value.