Question

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

• A. 35,000 kg/kJ
• B. 45,000 kg/kg
• C. 50,000 kJ/kg
• D. 55,000 kg/kJ

Answer 1

The correct option is C 50,000 kJ/kg

Calorific value is measured as the amount of heat produced by burning 1 kg of fuel. It is expressed as kJ/kg.

1.5 kg produces heat = 75,000 kJ
1 kg of fuel will produce = $\frac{75000}{1.5}$
= 50,000 kJ
Hence, the calorific value of the fuel is 50,000 kJ/kg.