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Question

Kavita wrote two sentences about calorific value of fuels.
(i)The amount of heat energy required by 1kg of a fuel to reach its ignition temperature for the complete combustion is called its calorific value.
(ii)It is expressed in a unit called kilojoule per kg (kJ/kg).
Choose the correct sentence(s).

A
(i)
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B
(ii)
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C
Both (i) and (ii)
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D
None of these
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Solution

The correct option is B (ii)
calorific value
The amount of energy produced by the complete combustion of a material or fuel. Measured in units of energy per amount of material, e.g. kJ/kg.
The amount of energy available from an item of food when digested, mostly from carbohydrates and fats.

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