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Fuels and Combustion

Fuels and Combustion
Largest constituent of blast furnace gas is

CO₂
CO
N₂
H₂

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Fuels and Combustion
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

C + H₂O ⟷ CO + H₂
C + 2H₂O ⟷ CO₂ + 2H₂
2CO ⟷ C + CO₂
CO + H₂O ⟷ CO₂ + H₂

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Fuels and Combustion
__________ of the coal is the basis for Seylor's coal classification.

Ultimate analysis
Proximate analysis
Calorific value
Caking index

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Fuels and Combustion
Bulk density of pulverised coal may be about __________ kg/m³.

500
1000
100
1500

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Fuels and Combustion
Caking coal is desirable for

Burning on travelling grate
Burning on firebars
All of these
Coke making

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Fuels and Combustion
Calorific value of wood gas is about __________ kcal/Nm³.

3300
5400
8500
1500

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