The unit of calorific value is:

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kJ/kg

kg/kJ

kB/kJ

g/kJ

answer is A.

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Detailed Solution

Concept- Calorific value refers to the amount of heat produced by a unit volume of a substance through complete combustion.
The Calorific values of some fuels are:
Petrol: 48,000 kJ/kg
Coke: 31,000 kJ/kg
Natural gas: 43,000 kJ/kg
Kerosene: 46,200 kJ/kg
Now, how good a fuel is based on its calorific value. Thus, higher the calorific value, higher is the efficiency of fuel.
Since fuels and food are an integral part of our lives, it is essential to monitor the amount of energy we consume or transport. Knowing the calorific value of fuels and food helps us make easy calculations that gas suppliers and transporters will need to bill gas consumers.
Foods that are too low or too high in calories can lead to health problems, so it must be remembered that the body will be able to perform daily activities and stay fit if the calories are taken within a certain range.
Thus, the unit of calorific value is kJ/kg.
Hence, the correct answer is 1.

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