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Fuels and Combustion

Fuels and Combustion
Which of the following coke has the least percentage of ash?

Metallurgical coke
Foundary coke
Beehive coke
Petroleum coke

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Fuels and Combustion
Natural draft created by the chimney depends upon

Its height
Both A & B
Temperature of the flue gas
Neither A nor B

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Fuels and Combustion
Fuel consumption in coke making can be reduced by

All of these
Dry quenching of coke
Stamped charging of coal
Preheating, blending and de-ashing the coal

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Fuels and Combustion
Abrasion index of blast furnace coke should be around __________ percent.

80
20
55
35

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Fuels and Combustion
Coke oven gas is stripped of its H₂S and mercaptans content by

Adsorption on bog iron bed
Bubbling it through dilute sulphuric acid
Adsorption on silica gel
Absorption in wash oil

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Fuels and Combustion
In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

None of these
Alkaline pyragllol solution
Cuprous chloride
Potassium hydroxide

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