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Fuels and Combustion

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

38
11
2
20

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Fuels and Combustion
Efficient burning of anthracite coal requires

All of these
Low preheat of air
Fine grinding
High excess air

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Fuels and Combustion
KOH solution used in orsat apparatus absorbs

Neither A nor B
Both A & B
CO₂
SO₂

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Fuels and Combustion
Which of the following combustibles is absent in blast furnace gas?

H₂
CO
CH₄
None of these

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Fuels and Combustion
A coal having higher volatile matter content, has lower

Chance of catching fire during storage in open space
Smoking tendency on burning
Ignition temperature
Coke oven gas yield on carbonisation

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Fuels and Combustion
Percentage of carbon monoxide in blast furnace gas may be around

8
14
22
52

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