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Fuels and Combustion

Fuels and Combustion
'Fuel' can be defined as a substance which produces heat by

All of these
Nuclear fusion
Combustion
Nuclear fission

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

25
55
5
80

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Fuels and Combustion
Light oil whose major component is benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C.

200-300
80-170
280-300
250-270

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Fuels and Combustion
Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

Under pressurising
Back draughting
None of these
Banking

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Fuels and Combustion
In general, the limit of inflammability/explosion limit of fuel gases is widened by the

All of these
Use of pure oxygen for combustion instead of air
Increase in gas pressure
Increase in temperature (i.e. preheating)

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Fuels and Combustion
Which adsorbant is used for removing sulphur compounds (S Q, H₂S, RSH etc.) removal from coke oven gas in by-products recovery plant ?

Basalt
Bog iron (i.e., moist ferric hydroxide)
Diatomaceous earth
Silica gel

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