Question

On complete combustion of 9 kg of fuel 'F' 180000 kJ of heat energy is produced where as on
complete combustion of 500 g of fuel 'S' 2000 kJ of heat energy is produced. If the calorific value of
fuel 'F' is 'x' and fuel 'S' is 'y' then the value of x - y'in kJ/kg will be

Answer 1

Answer:

40,000kJ/kg

Explanation:

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.

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