Question

In an experiment 4.5 kg of a fuel was completely burnt. The heat produced was measured to be 180,000 kJ. Calculate the calorific value of the fuel.
[2 marks]
[NCERT Q.11]
[Calorific value]

Answer 1

Solution:

Given:
Amount of heat released = 180000 kJ
Mass of fuel = 4.5 kg

To find:
Calorific Value of the fuel

Calorific value of the fuel = $\frac{\text{Amount of heat released (in kJ)}}{\text{Mass of fuel (in kg)}}$ [1 mark]

Calorific value of the fuel = $\frac{\text{180000 kJ}}{\text{4.5 kg}}$

Calorific value of the fuel = 40000 kJ/kg [1 mark]