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Fuels and Combustion

Fuels and Combustion
Calorific values of both the solid as well as the liquid fuels can be determined by __________ calorimeter.

Junkar's
Bomb
None of these
Boy's

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Fuels and Combustion
As time passes, the calorific value of stored coal

Remains unaltered
Decreases
May increase or decrease (depends on the method of storage)
Increases

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Fuels and Combustion
With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.

Methane
Hydrogen
All of these
Unsaturated hydrocarbons

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Fuels and Combustion
The main advantage of forced draft over natural draft is that

All of these
Furnace control is easier
Smaller height chimney can be used
Combustion of fuel is complete

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Fuels and Combustion
Stack (chimney) height in a big thermal power plant is dictated by the

None of these
Pollution control aspect
Draught to be created
Limitation of constructional facilities

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Fuels and Combustion
In low temperature carbonisation (as compared to high temperature carbonisation) of coal

Free carbon in tar is more
Ammonia yield is more
Aliphatic tar is produced
All of these

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