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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.

3
5
2
1

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Fuels and Combustion
The main advantage of forced draft over natural draft is that

Furnace control is easier
Combustion of fuel is complete
Smaller height chimney can be used
All of these

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Fuels and Combustion
Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent.

4
96
20
40

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Fuels and Combustion
Octane number of 2, 2, 4 - trimethyl pen-tane is

100
In between 0 and 100
More than 100

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Fuels and Combustion
Which of the following would require maximum amount of % excess air for complete combustion?

Lump coal (fixed on chain grate)
Coke oven gas
Furnace oil
Pulverised coal

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Fuels and Combustion
Which of the following is used for making the explosive 'TNT'?

Benzol
Pyridine
Toluene
Cerosote

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