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Standard VIII
Chemistry
Fuel Efficiency
Calorific val...
Question
Calorific value is the amount of heat liberated during the combustion of 1 kg of a substance.
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Calorific value is the amount of heat liberated during the combustion of 1 kg of a substance.
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3 kg of coal liberates 6000 kJ of heat on combustion. Find its calorific value.
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3 kg of coal liberates 6000 kJ of heat on combustion. Find its calorific value.
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Heat liberated on complete combustion of 0.6 g of a fuel of calorific value 18.2 kj/g is utilized for heating 400g of water. Calculate the rise in temperature of water. ( specific heat of water is 4.2 j/ g/ degree c)
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Assertion :Heat of combustion is always negative. Reason: Heat of combustion is used to calculate the calorific value of fuels.
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