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Fuels and Combustion

Fuels and Combustion
Which of the following has the highest heat of combustion?

CH₄
H₂
C₂H₆
CO

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Fuels and Combustion
Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

CO content
Dew point
O₂ content
CO₂ content

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Fuels and Combustion
Naphthalene is removed from coke oven gas by

Absorbing in vetro-coke solution
Adsorbing on bog iron bed
Scrubbing with wash oil (a petroleum product)
None of these

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Fuels and Combustion
Percentage of carbon monoxide in blast furnace gas may be around

52
14
22
8

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Fuels and Combustion
Bunsen burner is an example of a/an __________ burner.

Submerged combustion
Rotary cup
Outside mixing/diffusion flame/nozzle mix type
Inside mixing/premix type

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Fuels and Combustion
Safe condition for storage of high V.M. bituminous coal is that

Both A and B
Maximum 200 tons should be stored in a heap
Neither A nor B
Height of the coal heap should be < 3 metres

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