Define calorific value. How is this value useful?
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Calorific value is basically a measurement of energy or heat released (kJ or kcal) when 1kg of coal is completely combusted in the presence of air or oxygen.
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Explanation:
Calorific value is the energy or amount of heat produced as a result of the complete combustion of a unit volume of the substance. It is important as it gives the value of fuel or food in numbers which can be calculated with a formula.
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