Question

22. What is the calorific value of 4.5 kg of a fuel which gives heat energy of 90,000 kj?
200,000kJ/kg
© 200kJ/kg
2000kJ/kg
20,000kJ/kg​

Answer 1

Explanation:

The calorific value of fuel is the amount of heat produced by the complete combustion of 1 kg of fuel.

Heat produced by 4.5 kg of fuel =180000 kJ.

Heat produced by 1 kg fuel =

4.5

180000

=40000 kJ/kg.

Hence, the calorific value of the fuel is 40,000 kJ/kg.