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Fuels and Combustion

Fuels and Combustion
The gasification reaction represented by, C + H₂O = CO + H₂, is

Exothermic
Catalytic
Endothermic
Autocatalytic

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Fuels and Combustion
A sooty flame can be made non-luminous by

Admitting more gas
Shutting air supply
Admitting more air
Shutting gas supply

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Fuels and Combustion
Percentage of hydrogen in coke oven gas may be around

45
60
10
25

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Fuels and Combustion
Coal containing large quantity of __________ are difficult to wash.

Volatile matter
Ash
Inherent mineral matter
Free impurities

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Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

None of these
Junker's
Boy's
Bomb

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

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

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