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Fuels and Combustion

Fuels and Combustion
Main use of soft coke is as __________ fuel.

Foundary
Domestic
Blastfurnace
None of these

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Fuels and Combustion
Use of excess of combustion air in the combustion of fuels results in

Condensation of water vapour from the fuel gas
Heat losses
None of these
Long flame

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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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Fuels and Combustion
Coal is pulverised before burning in large capacity boiler furnaces mainly to

Facilitate easy ash removal
Ensure its complete combustion
Enhance its calorific value
Provide trouble free operation

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Fuels and Combustion
Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.

Ash content
Volatile matter
Colour
Moisture content

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Fuels and Combustion
Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?

Ammonium sulphate
None of these
Ammonium phosphate
Ammonium nitrate

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