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Fuels and Combustion

Fuels and Combustion
Pick the odd man out.

Pitch creosote mixture
Wood
Oil gas
Briquettes

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Fuels and Combustion
Main use of hard coke produced by high temperature carbonisation is in the

Domestic ovens
Iron blast furnace
Cupola in foundaries
Sinter making

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Fuels and Combustion
Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

NCV at constant pressure
NCV at constant volume
GCV at constant pressure
GCV at constant volume

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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.

Colour
Moisture content
Ash content
Volatile matter

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Fuels and Combustion
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)?

Carburetted water gas
Natural gas
Liquified petroleum gas
Producer gas

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

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

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