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Fuels and Combustion

Fuels and Combustion
Which of the following is a primary fuel?

Blast furnace coke
Wood charcoal
Natural gas
Gasoline

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Fuels and Combustion
In flue gas analysis by Orsat's apparatus, carbon monoxide is absorbed by

Potassium hydroxide
Alkaline pyrogallol solution
Cuprous chloride
None of these

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Fuels and Combustion
The maximum adiabatic flame temperature is attained, when the fuel is burnt with

More than theoretically required amount of air
Theoretically required amount of oxygen
Theoretically required amount of air
Less than theoretically required amount of air

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Fuels and Combustion
The lowest temperature, at which a solid fuel produces enough vapors to support continuous combustion, is called

Fire point
Burning temperature
Kindling temperature
Smoke point

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Fuels and Combustion
Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

300
2000
5000
10000

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Fuels and Combustion
Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.

500
950
1100
750

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