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Fuels and Combustion

Fuels and Combustion
Which of the following is called "blue gas"?

Coke oven gas
Producer gas
Water gas
Natural gas

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Fuels and Combustion
In Lurgi coal gasifier,

Entrainment of solids is higher
Larger quantity of coal can be processed
Low carbon conversion efficiency is achieved
Coking coals cannot be used

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Fuels and Combustion
Which of the following is a lean fuel gas?

Blast furnace gas
LPG
Natural gas
Coke oven gas

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Fuels and Combustion
Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

10000
5000
2000
300

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Fuels and Combustion
The cuprous chloride used in orsat apparatus can absorb

Both CO and O₂
All of these
Both CO and CO₂
Only CO

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Fuels and Combustion
Deficiency of combustion air during combustion of a gaseous fuel

Shortens the flame
Both A & B
Lengthens the flame
Causes heat loss of fuel by its partial combustion

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