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Fuels and Combustion

Fuels and Combustion
About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

1
3
2
5

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Fuels and Combustion
A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

20 to 40
3 to 4
1 to 2
5 to 15

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Fuels and Combustion
Which of the following is the most poisonous gas?

Producer gas
Coke oven gas
L.D. converter gas
Blast furnace gas

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Fuels and Combustion
Air/gas ratio for complete combustion will be the highest for

Carburetted water gas
Coke oven gas
Gobar gas
LPG

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Fuels and Combustion
Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its

Caking index
Calorific value
Yield of carbonised products
Friability & oxygen content

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

300
5000
2000
10000

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