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Fuels and Combustion

Fuels and Combustion
'Fat' coal means a coal having

Low ash content
Non smoking tendency
High volatile matter
Low calorific value

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

Junker's
Bomb
None of these
Boy's

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Fuels and Combustion
Overfire burning in a furnace is a phenomenon characterised by the

Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air
Supply of excess fuel
None of these
Supply of excess air

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Fuels and Combustion
Removal of hydrogen from coke oven gas

Decreases its calorific value
Is not possible on commerical scale
Increases its calorific value
Does not alter its calorific value

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Fuels and Combustion
Coking coals are invariably

Anthracites
Bituminous coals
Lignites
Semi-anthracites

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Fuels and Combustion
Fossil fuels mean

Those fuels which are found in the crust of earth
Solid fuels
Premature fuels with low calorific value
Liquid fuels

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