What is the unit of calorific value?
kJ/kg
Calorific value is the heat energy released per unit mass of fuel on complete combustion — i.e. energy / mass. The SI unit of energy is the kilojoule (kJ) and mass is measured in kilograms (kg), giving kJ/kg.
kN/kg is force per mass, while kW/sec and kCal/sec involve time and represent rates of energy transfer (power), not energy per mass. Hence the answer is kJ/kg.
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Important Questions from Heat and Transfer
In summer season, the top and outer surface of the house are painted white because:
Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials?
What is the heat released by a heating filament rated 24 W when it is kept on for 6 seconds?
Space is left between logs of wood when they are burnt, so that:
On a hot summer afternoon, the tent made up of fabric will be preferred as white colour is:
