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Fuels and Combustion

Fuels and Combustion
In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

H₂O
CO
O₂
CO₂

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Fuels and Combustion
Hard pitch is used for making

Plastics
Pulverised fuel
Perfumes
Insecticides

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Fuels and Combustion
__________ process is meant for direct hydrogenation of coal to produce liquid fuel.

Lurgi
Fischer-Tropsch
Bergius
None of these

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Fuels and Combustion
If oxygen content in the flue gas rises too high, fuel is being wasted by

None of these
Dry gas/stack gas loss
Moisture loss
Incomplete combustion

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Fuels and Combustion
During the carbonisation of coal

All of these
All tar is evolved at < 600°C
Hard semi-coke starts shrinking at 600°C
Evolution of H₂ and formation of methane and aromatics occur at > 700°C

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Fuels and Combustion
Oxygen percentage (by weight) in atmospheric air is

21
29
19
23

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