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Fuels and Combustion

Fuels and Combustion
Caking index of a coal is a measure of its

Reactivity
Agglutinating (binding) properties
Porosity
Abradability

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Fuels and Combustion
Blast furnace gas constitutes mainly of

CH₄ & CO₂
N₂ & H₂
N₂ & CH₄
N₂ & CO

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Fuels and Combustion
Percentage of methane in coke oven gas may be around

25
5
50
15

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

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

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

CH₄
NH₃
CO₂
H₂

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Fuels and Combustion
Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

0.87
2.4
1.75
11.4

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