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Fuels and Combustion

Fuels and Combustion
Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

1.75
0.87
2.4
11.4

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Fuels and Combustion
By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of

Benzol
Ammonia
None of these
Tar

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Fuels and Combustion
To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in

Fine sizes without the presence of any lump
Shallow and small piles
Closed space without any ventilation facility
Large heaps with small surface to volume ratio

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Fuels and Combustion
Volatile matter content in coking coal may be about __________ percent.

46
22
1
7

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Fuels and Combustion
Dry air required to burn 1 kg of carbon completely may be around __________ kg.

2
38
20
11

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Fuels and Combustion
Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?

Ammonium sulphate
Ammonium nitrate
Ammonium phosphate
None of these

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