Question

. a. What is calorific value? Write its unit.
b. In an experiment 5 kg of a fuel was completely burnt. The heat produced was
measured to be 1,80,000 kJ. Calculate the calorific value of the fuel.​

Answer 1

Answer:

a) Calorific value is the amount of heat energy present in food or fuel and which is determined by the complete combustion of specified quantity at constant pressure and in normal conditions. It is also called calorific power. The unit of calorific value is kilojoule per kilogram i.e. KJ/Kg.

b)Total mass of fuel = 4.5 kg Total heat produced = 180,000 kJ Heat produced by burning 1 kg of fuel = 180,000 kJ/4.5 kg = 40,000 kJ/kg. So, calorific value of fuel = 40,000 kJ/kg.

Explanation:

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Answer 2

value is kilojoule per kilogram