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Fuels and Combustion

Fuels and Combustion
The calorific value of producer gas is around __________ kcal/Nm³

500
1300
9000
4500

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Fuels and Combustion
Low temperature oxidation of coal is accelerated by the

Storage in compressed piles
All of these
Absence of porous or friable particles
Storage in large heaps

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Fuels and Combustion
A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be

Less
More
Same
Data insufficient; can't be predicted

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Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

None of these
Bomb
Boy's
Junker's

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Fuels and Combustion
If CO₂ is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as

CO
SO₂
O₂
N₂

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Fuels and Combustion
Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

95 and 100
40 and 70
25 and 97
80 and 97

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