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FUELS AND COMBUSTION

Fuels and Combustion
Ignition temperature decreases progressively from anthracite to lignite, because

Carbon content decreases
Moisture content increases
Ash content increases
Volatile matter content increases

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Fuels and Combustion
Blast furnace gas is a very poisonous gas because of its predominantly high __________ content.

CH₄
CO₂
CO
H₂O

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Fuels and Combustion
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

Much higher
Much lower
Same
Either lower or higher, depends on the type of fuel

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Fuels and Combustion
Coke made in narrower by-product coke ovens (as compared to wider ovens) is

Stronger
Less reactive
All of these
Smaller in size

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Fuels and Combustion
Ammonia content in raw coke oven gas is about __________ gm/Nm³.

1
100
50
15

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