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Fuels and Combustion

Fuels and Combustion
The calorific value of natural gas is about __________ kcal/Nm³.

2500
10, 000
35, 000
25, 000

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Fuels and Combustion
Gray King Assay and Swelling Index of a coal is a measure of its

Resistance to impact breakage
Swelling characteristics
Agglutinating properties
Abradability

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

Electrostatic precipitator
Cyclone separator
Wet packed scrubber
Washing with monoethanolamine

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Fuels and Combustion
Combustion of pulverised coal compared to the lumpy coal

Provides higher thermal efficiency & flame temperature
Facilitates combustion with lower excess air
Provides better control of furnace temperature
All of these

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Fuels and Combustion
Calorific value of coke oven gas is around __________ Kcal/Nm³.

4200
7500
900
2000

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Fuels and Combustion
A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be

Same
Data insufficient; can't be predicted
More
Less

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