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Fuels and Combustion

Fuels and Combustion
Coke oven gas compared to blast furnace gas is

Lighter
More explosive and inflammable
All of these
Less poisonous

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Fuels and Combustion
Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of

MgSO₄ & BaCl₂
BaSO₄ & NaCl
MgO & Na₂CO₃
MgCO₃ & NaCl

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Fuels and Combustion
Calorific value of coke oven gas is around __________ Kcal/Nm³.

4200
7500
2000
900

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

Combustion
All of these
Nuclear fusion
Nuclear fission

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Fuels and Combustion
Stack heat losses can be minimised by

Controlling the excess air
Using low c.v. fuels
Maintaining proper draft in the furnace
Oxygen enrichment of combustion air

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

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

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