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Fuels and Combustion

Fuels and Combustion
Main use of soft coke is as __________ fuel.

Foundary
Domestic
Blastfurnace
None of these

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Fuels and Combustion
Flue gas from the heating chamber of byproduct coke ovens is removed by

Steam ejector
Induced draft fan
Natural draft
Forced draft fan

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Fuels and Combustion
Number of macrocomponents present in coal according to Stopes are

Six
Two
Four
Five

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Fuels and Combustion
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass.

Density
None of these
Electrical resistivity
Porosity

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Fuels and Combustion
Which of the following has the highest gross calorific value?

Oil refinery gas
Carburetted water gas
Blast furnace gas
Coke oven gas

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Fuels and Combustion
Dry air required to burn 1 kg of carbon completely may be around __________ kg.

38
2
20
11

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