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Fuels and Combustion

Fuels and Combustion
Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.

75
5
55
25

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Fuels and Combustion
Out of the following fuels, the difference between gross and net calorific value will be minimum in case of

Blast furnace gas
Coke oven gas
Natural gas
Water gas

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Fuels and Combustion
Calorific value of furnace oil is about __________ Kcal/kg.

20000
10000
5000
15000

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Fuels and Combustion
Which of the following is not a micro component present in coal?

Clarain
Fusinite
Micrinite
Liptinite

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

Calorific value
Proximate analysis
Ultimate analysis
Caking index

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Fuels and Combustion
Coal tar (produced by high temperature carbonisation) is the main source of

Aromatic compounds
Paraffins
Alphatic compounds
Olefins

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