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Fuels and Combustion

Fuels and Combustion
Which of the following has the highest flame velocity?

H₂
CO
C₂H₆
CH₄

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

1
2
3
5

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Fuels and Combustion
Compound coke ovens are those which can be heated by

Rich gas (e.g., coke oven gas)
Both steam and electrical power
Both B and C
Lean gas (e.g., B.F. gas)

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Fuels and Combustion
Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.

75
5
55
25

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Fuels and Combustion
In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

H₂O
CO
CO₂
O₂

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Fuels and Combustion
L.D. converter gas (produced in steel plant) comprises mainly of

CO & O₂
CO₂ & O₂
CO (upto 65%) & CO₂
CO₂ & H₂

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