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Fuels and Combustion

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

CH₄
C₂H₆
H₂
CO

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Fuels and Combustion
Which will have the least volatile matter and hence will be the most difficult to ignite?

Coke
Aanthracite
Bituminous coal
Semi-bituminous coal

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

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

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Fuels and Combustion
Which of the following has the highest calorific value?

Sub-bituminous coal
Anthracite
Peat
Lignite

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Fuels and Combustion
Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

6
12
24
18

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Fuels and Combustion
The difference between total carbon and fixed carbon of coal will be minimum in case of

Bituminous coal
Anthracite
Lignite
High temperature coke (V.M < 0.5%)

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