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Fuels and Combustion

Fuels and Combustion
Water gas constitutes mainly of

CO & N₂
CO & H₂
CO₂ & H₂
CH₄ & H₂

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Fuels and Combustion
Number of macrocomponents present in coal according to Stopes are

Five
Two
Six
Four

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

2.5
3.5
1.5
0.5

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Fuels and Combustion
Spontaneous combustion of coal on storage results due to

All of these
Storage in large heaps with small surface to volume ratio
Low temperature oxidation
Inadequate ventilation

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Fuels and Combustion
'Fuel' can be defined as a substance which produces heat by

Nuclear fusion
Nuclear fission
Combustion
All of these

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Fuels and Combustion
Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.

55
25
5
75

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