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Fuels and Combustion

Fuels and Combustion
'Wobbe index' is a characteristic of

Fat coals
Gaseous fuels
Solid fuels
Liquid fuels

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Fuels and Combustion
Presence of nitrogen in combustion air does not reduce the

Amount of heat liberated
Any of the above
Flue gas temperature
Flame temperature

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

7500
2000
4200
900

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

25, 000
10, 000
2500
35, 000

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Fuels and Combustion
Naphthalene is removed from coke oven gas by

Scrubbing with wash oil (a petroleum product)
Adsorbing on bog iron bed
None of these
Absorbing in vetro-coke solution

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Fuels and Combustion
Calorific value of of blast furnace gas is around __________ KCal/Nm³.

850
4200
6500
1800

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