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Fuels and Combustion

Fuels and Combustion
Coking coals are invariably

Anthracites
Semi-anthracites
Lignites
Bituminous coals

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Fuels and Combustion
Higher fuel combustion efficiency can not be achieved by

Supplying correct amount of combustion air
Reducing sulphur content in the fuel
Adopting proper fuel firing technique & fuel preparation
Preheating of fuel gases & combustion air

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Fuels and Combustion
__________ is used as jet engine fuel.

LPG
Diesel
Petrol
Kerosene

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Fuels and Combustion
Out of the following fuels, the difference between the net and gross calorific value is maximum in case of

Fuel oil
Blast furnace gas
Pitch
Bituminous coal

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Fuels and Combustion
Micum Index of a coke is a measure of its

Hardness & strength
Bulk density
Reactivity
Porosity

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Fuels and Combustion
Catalyst used in Fischer-Tropsch process is

Zinc oxide
Alumina
Nickel
Thorium oxide

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