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Fuels and Combustion

Fuels and Combustion
'Fuel' can be defined as a substance which produces heat by

Nuclear fusion
Nuclear fission
All of these
Combustion

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Fuels and Combustion
The main advantage of forced draft over natural draft is that

Combustion of fuel is complete
Smaller height chimney can be used
Furnace control is easier
All of these

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Fuels and Combustion
Which of the following is not used as a binder in coal briquetting?

Molasses
Tar
Line
Pitch

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Fuels and Combustion
Too much of excess air in combustion results in high

Stack gas temperature
All of these
Fuel consumption for the same heat load
Percentage of oxygen in flue gases

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Fuels and Combustion
Bituminous coal

Burns with smoky yellow flame
Ignites less easily than anthracite
Both B and C
Is generally coking

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

Air
Carbon dioxide
Nitrogen
Phenolic water

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