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Fuels and Combustion

Fuels and Combustion
Which of the following is not a micro component present in coal?

Clarain
Liptinite
Micrinite
Fusinite

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Fuels and Combustion
In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

Potassium hydroxide
Alkaline pyragllol solution
None of these
Cuprous chloride

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

Air
Carbon dioxide
Phenolic water
Nitrogen

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Fuels and Combustion
Steam is intermittently admitted into the fuel bed during the production of producer gas to

Convert CO to CO₂
Increase the combustion rate
Increase the gas production rate
Minimise the chances of clinker formation

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Fuels and Combustion
Actual flame temperature is always lower than the adiabatic flame temperature, because there is

No possibility of obtaining complete combustion at high temperature
Both A & B
Always loss of heat from the flame
Neither A nor B

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Fuels and Combustion
Nitrogen in coal

Is recovered as ammonia during its carbonisation
All of these
Comes from protein in parent vegetable matter
Is present upto 1-2%

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