Question

"A fuel has calorific value of 25,000 kJ/kg."
Which among the following options does the above statement implies to?

• A. 4 kg of fuel will release 1,00,000 kJ of energy on complete combustion.
• B. 1 kg of fuel will release 1,00,000 kJ of energy on complete combustion.
• C. 1 kg of fuel will take in 25,000 kJ of energy on complete combustion.
• D. 4 kg of fuel will take in 1,00,000 kJ of energy on complete combustion.

Answer 1

The correct option is A 4 kg of fuel will release 1,00,000 kJ of energy on complete combustion.

Calorific value is the amount of heat energy produced on complete combustion of 1 kg of fuel.
That implies 1 kg of fuel gives 25,000 kJ of energy. Similarly, 4 kg of fuel will give 1,00,000 kJ of energy.