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Fuels and Combustion

Fuels and Combustion
Which of the following coke has the least percentage of ash?

Metallurgical coke
Beehive coke
Petroleum coke
Foundary coke

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Fuels and Combustion
Coke oven gas burns with an yellowish flame, because of the presence of

H₂
CO₂
CH₄
NH₃

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Fuels and Combustion
Purity of coke means that, it is high in carbon and low in

Iron
Moisture
Ash
Volatiles

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Fuels and Combustion
When the coal is heated in absence of air, it is called its

Coalification
Deoxidation
Gasification
Carbonisation

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Fuels and Combustion
Which of the following is a primary fuel?

Wood charcoal
Blast furnace coke
Gasoline
Natural gas

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Fuels and Combustion
Main constituents of benzol are

Anthracene & phenol
Ammonia & phenol
Benzene, toluene & xylene
Tar & creosote

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