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Fuels and Combustion

Fuels and Combustion
Which of the following is a lean fuel gas?

Coke oven gas
Natural gas
LPG
Blast furnace gas

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Fuels and Combustion
The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be

29
79
77
21

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Fuels and Combustion
'Fat coals' are those coals which have very high

Inherent moisture content
Fusion point of its ash
Volatile matter content
Caking capacity

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Fuels and Combustion
Low temperature oxidation of coal resulting from bad storage conditions does not decrease its

Caking power
Oxygen content
Calorific value
Hydrogen content

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Fuels and Combustion
With increase in calorific value of fuels, their adiabatic flame temperatures

Remain unchanged
Decrease
May increase or decrease ; depends on the quantity of products of combustion
Increase

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Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

Bomb
Boy's
None of these
Junker's

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