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Fuels and Combustion

Fuels and Combustion
The cooling medium used in dry quenching of coke is

Nitrogen
Phenolic water
Carbon dioxide
Air

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

120
180
30
65

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Fuels and Combustion
A coal with high __________ content, would ignite most easily.

Volatile matter
Ash
Oxygen
Fixed carbon

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Fuels and Combustion
The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen.

Lower than
Same as
Not related to
Higher than

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Fuels and Combustion
The pyragallol solution used in orsat apparatus can absorb

Only O₂
Both O₂ and CO
Both O₂ and CO₂
All of these

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Fuels and Combustion
Combustion reaction of fuels is a/an __________ reaction.

Endothermic
Exothermic
Auto catalytic
None of these

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