Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.

sulphur

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oxygen

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hydrogen

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carbon

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Solution

The correct option is B oxygen
The energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram. Oxygen present in dry gaseous fuel does not contribute to its calorific value.

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