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Fuels and Combustion

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

50
100
1
15

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Fuels and Combustion
While the first commercial low temperature coal carbonisation plant is located at Neyveli (in Chennai), the second such plant has been built at

Raniganj
Dhanbad
Singreni (AP.)
Dankuni (West Bengal)

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Fuels and Combustion
Stack heat losses can be minimised by

Using low c.v. fuels
Maintaining proper draft in the furnace
Controlling the excess air
Oxygen enrichment of combustion air

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Fuels and Combustion
Benzene is used

As a perfume
As an explosive
As a motor fuel
For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR)

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Fuels and Combustion
The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be

27.6
42.9
23
47.3

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Fuels and Combustion
Insitu theory and drift theory are related to the

Coalification
Origin of coal
Variation of coal quality with depth
Origin of petroleum oil

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