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Fuels and Combustion

Fuels and Combustion
About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

5
2
3
1

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Fuels and Combustion
Blast furnace gas compared to coke oven gas has

Narrower limit of inflammability
Higher calorific value
Lower ignition temperature
Lower theoretical flame temperature

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Fuels and Combustion
Actual flame temperature is always lower than the adiabatic flame temperature, because there is

Always loss of heat from the flame
Neither A nor B
No possibility of obtaining complete combustion at high temperature
Both A & B

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Fuels and Combustion
Hard coke is manufactured from

Bituminous coal
Semi-anthracite
Lignite
Anthracite

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Fuels and Combustion
Cannel coal and boghead coal are the examples of

Liptobiolites
Sapropelic coals
Humic coals
None of these

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Fuels and Combustion
Fusion point of coal ash increases with increase in its __________ content.

Lime and magnesia
Iron silicate
All of these
Iron sulphate

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