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Fuels and Combustion

Fuels and Combustion
Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

65
30
120
180

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

Shift conversion
Reduction
Neumann reversal
Boudouard

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Fuels and Combustion
Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the

Mixing with blast furnace gas
Steel ladle drying
Coke oven battery heating
Hot scarfing of steel slabs

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Fuels and Combustion
Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its

All of these
Flue gas has lower dew point thereby facilitating more waste heat recovery
Sulphur content is lower
Emissivity factor is higher

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Fuels and Combustion
The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal.

Fast & slow
Slow & high
Fast & high
Slow & low

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Fuels and Combustion
Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

12
24
6
18

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