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Fuels and Combustion

Fuels and Combustion
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

N₂
CO₂
CH₄
H₂

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Fuels and Combustion
Calorific value of bituminous coal may be around __________ Kcal/kg.

20000
500
1500
6500

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Fuels and Combustion
Coke oven gas constitutes mainly of

H₂ & CO₂
H₂ & CH₄
H₂ & CO
CH₄ & CO

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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

N₂
O₂
SO₂
CO

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Fuels and Combustion
Coking time in a commercial high temperature coal carbonisation plant is about __________ hours.

28
18
36
6

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Fuels and Combustion
The gasification reaction represented by, C + H₂O = CO + H₂, is

Catalytic
Exothermic
Endothermic
Autocatalytic

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