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Fuels and Combustion

Fuels and Combustion
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.

Entrained
Fixed
Fluidised
Moving

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Fuels and Combustion
Blast furnace gas compared to coke oven gas has

Lower ignition temperature
Lower theoretical flame temperature
Narrower limit of inflammability
Higher calorific value

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Fuels and Combustion
Low temperature oxidation of coal is accelerated by the

Storage in large heaps
Absence of porous or friable particles
Storage in compressed piles
All of these

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Fuels and Combustion
Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if

It contains large amount of volatile matter
All of these
It is stored in tall heaps
Smaller fines are stored in large quantity

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Fuels and Combustion
Gray King Assay and Swelling Index of a coal is a measure of its

Agglutinating properties
Swelling characteristics
Abradability
Resistance to impact breakage

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

None of these
Pyrogallol solution
KOH
Ammoniacal cuprous chloride

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