Heat of combustion of a fuel mol. wt 86 is 688 kJ/mol. The calorific value of fuel is

Q. Heat of combustion of CH4, C2H4, C2H6 are -890, -1411, -1560 kJ/mol respectively. Which calorific fuel value in kJ/g?

Q. Assertion :Heat of combustion is always negative. Reason: Heat of combustion is used to calculate the calorific value of fuels.

Q. Calculate the amount of fuel required to produce 360000 kJ of heat. Calorific value of the fuel is 9000 kJ/kg.

Q. On burning completely 1.5 kg of a fuel produces 75,000 kJ of heat energy. The calorific value of the fuel is –

Q. "A fuel has calorific value of $25,000kJ/kg$."
What does the above statement represent?