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Fuels and Combustion

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
O₂
SO₂
N₂

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Fuels and Combustion
Percentage of methane in coke oven gas may be around

5
50
25
15

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Fuels and Combustion
One kg of carbon for theoretically complete combustion requires __________ kg of air.

0.5
11.5
12
23

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Fuels and Combustion
With increase in calorific value of fuels, their adiabatic flame temperatures

Decrease
Increase
Remain unchanged
May increase or decrease ; depends on the quantity of products of combustion

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Fuels and Combustion
Stack (chimney) height in a big thermal power plant is dictated by the

Pollution control aspect
Draught to be created
None of these
Limitation of constructional facilities

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Fuels and Combustion
Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%).

150
5000
1500
3500

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