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Fuels and Combustion

Fuels and Combustion
Which of the following constituents of coal is the most important in the production of coke?

Volatiles
Carbon
Ash
Moisture

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Fuels and Combustion
Narrow coke ovens as compared to wider coke ovens

Require less time of carbonisation
All of these
Produce smaller coke
Produce stronger coke

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Fuels and Combustion
Highly caking coals

Both B and C
May damage the coke oven walls during carbonisation
Produce strong coke
Produce weak coke

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Fuels and Combustion
Gobar gas is produced by the __________ of cown dung.

Oxidation
Hydrogenation
None of these
Fermentation

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Fuels and Combustion
Atomising steam to fuel oil ratio in a burner should be around

2.5
3.5
0.5
1.5

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Fuels and Combustion
The hottest part of the flame lies in its____zone.

Non-luminous
Unburnt gases
Yellow
Luminous

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