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Fuels and Combustion

Fuels and Combustion
Coal containing large quantity of __________ are difficult to wash.

Volatile matter
Inherent mineral matter
Free impurities
Ash

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Fuels and Combustion
High ash containing coke

Produces more slag when used in the blast furnace
Has poor strength and abrasion resistance
None of these
Is desirable in producer gas manufacture

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Fuels and Combustion
Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

KOH
None of these
Ammoniacal cuprous chloride
Pyrogallol solution

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Fuels and Combustion
Presence of nitrogen in combustion air does not reduce the

Any of the above
Amount of heat liberated
Flue gas temperature
Flame temperature

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Fuels and Combustion
Largest constituent of blast furnace gas is

CO
CO₂
N₂
H₂

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Fuels and Combustion
Which of the following is not endothermic?

Gasification
Cracking
Partial oxidation
Reforming

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