Fuels and Combustion
Presence of nitrogen in combustion air does not reduce the

Flue gas temperature
Any of the above
Amount of heat liberated
Flame temperature

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Fuels and Combustion
Coke oven gas is a better fuel than blast furnace gas, because of its higher

Adiabatic flame temperature
Heat release rate (thus requiring smaller combustion chamber)
All of these
Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)

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Fuels and Combustion
Orsat apparatus is meant for

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

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Fuels and Combustion
Anthracite can be used for

All of these
Making carbon electrodes
Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke
Recarbonising steel

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