Fill in the following blank with a suitable word:
The amount of heat produced by burning a unit mass of a fuel completely is known as its __________ value.

The amount of heat produced by burning a unit mass of a fuel completely is known as its Calorific value.

Explanation

Calorific value of a fuel is defined as the amount of heat produced when 1 gram of a fuel undergoes complete combustion with oxygen. Its SI unit is kJ/kg.