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Fuels and Combustion

Fuels and Combustion
Coking time in beehive coke oven is about

2-3 days
One week
12 hours
Two weeks

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Fuels and Combustion
Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

Dew point
CO content
O₂ content
CO₂ content

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Fuels and Combustion
Blast furnace gas burns with a bluish flame, because of the presence of

CO
CO₂
CH₄
S

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Fuels and Combustion
Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

Ammoniacal cuprous chloride
KOH
None of these
Pyrogallol solution

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Fuels and Combustion
Undercharging of coal in the by-product coke ovens results in

Increase in its throughput
No change in the c.v. of coke oven gas
Increase in the c.v. of coke oven gas
Decrease in the c.v. of coke oven gas

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Fuels and Combustion
Which of the following is not a binder for coal briquetting?

Molasses
Bitumen
Coal tar
None of these

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