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Fuels and Combustion

Fuels and Combustion
Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.

22.4 Nm³
1kg mole
32 kg
All of these

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Fuels and Combustion
Advantages of fluidised bed combustion are

Reduced NOx formation in flue gas
High heat transfer rate
All of these
Lower furnace operating temperature

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Fuels and Combustion
For long flame and easy ignition, the coal used should have

Low ash
High ash
High volatile matter
High calorific value

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Fuels and Combustion
The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

Minimise its corrosion
Make it look attractive
Avoid radiation heat loss
None of these

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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
Caking coal is desirable for

Burning on travelling grate
Burning on firebars
Coke making
All of these

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