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Fuels and Combustion

Fuels and Combustion
Hard pitch is used for making

Plastics
Pulverised fuel
Insecticides
Perfumes

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Fuels and Combustion
Combustion of pulverised coal as compared to that of lump coal

Can be done with less excess air
Develops a low temperature flame
Develops a non-luminous flame
Provides a lower rate of heat release

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Fuels and Combustion
Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

2000
300
5000
10000

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

H₂
CH₄
N₂
CO₂

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Fuels and Combustion
Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent.

96
20
40
4

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Fuels and Combustion
Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.

All of these
22.4 Nm³
32 kg
1kg mole

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