Fuels and Combustion
Orsat apparatus is meant for

None of these
Finding out combustion efficiency
Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride
Gravimetric analysis of flue gas

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Fuels and Combustion
Ratio of primary air to secondary air increases with increase in the rank of coal, because the

Calorific value of the coal increases
High rank coals have higher amount of volatile matter
Ratio of fixed carbon to volatile matter increases
Oxygen content progressively decreases

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