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Fuels and Combustion

Fuels and Combustion
A coal with high __________ content, would ignite most easily.

Oxygen
Fixed carbon
Ash
Volatile matter

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Fuels and Combustion
White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is

Tar
Coke oven gas
Pulverised coke
Pitch

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Fuels and Combustion
Low temperature oxidation of coal during storage does not decrease its

Oxygen content
Caking power
None of these
Calorific value

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Fuels and Combustion
A good metallurgical coke should have very low

Porosity
Hardness & strength
Sulphur & phosphorous content
Fusion point of its ash

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Fuels and Combustion
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always

> 1
1
Unpredicatable

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Fuels and Combustion
The gasification reaction represented by, C + H₂O = CO + H₂, is

Endothermic
Catalytic
Exothermic
Autocatalytic

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