Question

2 kg of a fuel is burnt to produce 90,000 KJ of energy. Calculate the calorific value of the fuel.

please help i need this answer for my test​

Answer 1

Answer:

Solution

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Correct option is

A

40000

The calorific value of fuel is the amount of heat produced by the complete combustion of 1 kg of fuel.

Heat produced by 4.5 kg of fuel =180000 kJ.

Heat produced by 1 kg fuel =

4.5

180000

=40000 kJ/kg.

Hence, the calorific value of the fuel is 40,000 kJ/kg.

Answer 2

Explanation:

Calorific Value=90000/2=45000 KJ/kg