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Fuels and Combustion

Fuels and Combustion
Main use of soft coke is as __________ fuel.

Foundary
None of these
Blastfurnace
Domestic

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

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

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Fuels and Combustion
Coke oven gas burns with an yellowish flame, because of the presence of

H₂
CH₄
NH₃
CO₂

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Fuels and Combustion
Flue gas from the heating chamber of byproduct coke ovens is removed by

Natural draft
Steam ejector
Forced draft fan
Induced draft fan

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Fuels and Combustion
Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

25 and 97
80 and 97
40 and 70
95 and 100

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Fuels and Combustion
Highly caking coals

Produce weak coke
May damage the coke oven walls during carbonisation
Produce strong coke
Both B and C

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