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Fuels and Combustion

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

52
22
8
14

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Fuels and Combustion
Which of the following is used for making the explosive 'TNT'?

Benzol
Toluene
Pyridine
Cerosote

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Fuels and Combustion
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around

230 V AC
60 KV DC
60 KV AC
230 V DC

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Fuels and Combustion
The advantage of firing pulverised coal in the furnace lies in the fact, that it

Permits the use of low fusion point ash coal
All of these
Permits the use of high ash content coal
Accelerates the burning rate and economises on fuel combustion

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Fuels and Combustion
Micum Index of a coke is a measure of its

Hardness & strength
Reactivity
Porosity
Bulk density

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Fuels and Combustion
Higher fuel combustion efficiency can not be achieved by

Adopting proper fuel firing technique & fuel preparation
Reducing sulphur content in the fuel
Supplying correct amount of combustion air
Preheating of fuel gases & combustion air

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