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Fuels and Combustion

Fuels and Combustion
Preheating of a gaseous fuel results in increased

Quantity of flue gas
Flame length
Flame temperature
Ignition temperature

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Fuels and Combustion
For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will

Increase or decrease depending on the fuel type
Decrease
Increase
Not change

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Fuels and Combustion
The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n.

Neumann reversal
Shift conversion
Boudouard
Reduction

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Fuels and Combustion
Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

GCV at constant volume
NCV at constant pressure
GCV at constant pressure
NCV at constant volume

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

25, 000
10, 000
35, 000
2500

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Fuels and Combustion
Largest constituent of blast furnace gas is

N₂
CO₂
CO
H₂

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