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Fuels and Combustion

Fuels and Combustion
Which of the following has the highest heat of combustion?

CO
CH₄
H₂
C₂H₆

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Fuels and Combustion
Coalification means the

Complete combustion of coal
Underground gasification of coal
Process of conversion of lignite into anthracite
Direct hydrogenation of coal

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Fuels and Combustion
Stack heat losses can be minimised by

Maintaining proper draft in the furnace
Using low c.v. fuels
Oxygen enrichment of combustion air
Controlling the excess air

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Fuels and Combustion
Insitu theory and drift theory are related to the

Origin of coal
Coalification
Variation of coal quality with depth
Origin of petroleum oil

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Fuels and Combustion
Washing of coal decreases its

Caking index
Mineral matter content
Ash content
Both B and C

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Fuels and Combustion
Fuel for a fast breeder nuclear reactor is

Radium
Plutonium
Neptunium
Uranium

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