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70 kg of fuel was completely burnt for an experiment. The amount of heat energy was found to be 1,40,000 kJ. Calculate the calorific value of the fuel.

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3,000 kJ/kg

2,000 kJ/kg

3,500 kJ/kg

4,000 kJ/kg

answer is B.

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Detailed Solution

Calorific value of the fuel is 2,000 kJ/kg.

Amount of fuel burnt = 60 kg
Amount of heat produced = 1,80,000 kJ

Calorific value of the fuel = Heat produced /Amount of fuel
= 1,40,000/ 70

= 2,000 kJ/kg
∴ Calorific value of the fuel is 2,000 kJ/kg.

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