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Fuels and Combustion

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

500
1500
1000
100

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Fuels and Combustion
Traces of tar fog present in the coke oven gas is removed by

Cyclone separator
Washing with monoethanolamine
Wet packed scrubber
Electrostatic precipitator

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Fuels and Combustion
Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm³ /ton of dry coal.

60
500
160
750

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Fuels and Combustion
Percentage of nitrogen in blast furnace gas may be around

25
5
55
80

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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.

Electrical resistivity
None of these
Porosity
Density

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Fuels and Combustion
Which is the most matured coal?

Anthracite
Semi-anthracite
Lignite
Bituminous

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