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Fuels and Combustion

Fuels and Combustion
Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³.

1
2
4
6

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Fuels and Combustion
'Fat' coal means a coal having

Non smoking tendency
Low calorific value
Low ash content
High volatile matter

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Fuels and Combustion
Largest constituent of coke oven gas is

N₂
CO₂
H₂
CH₄

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Fuels and Combustion
Presence of force moisture in coal is most disadvantageous during its

Pulverisation
Storage
Transportation and handling
Washing

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Fuels and Combustion
Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the

Mixing with blast furnace gas
Steel ladle drying
Coke oven battery heating
Hot scarfing of steel slabs

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Fuels and Combustion
White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is

Pitch
Coke oven gas
Tar
Pulverised coke

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