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Fuels and Combustion

Fuels and Combustion
Volatile matter content of metallurgical coke may be around __________ percent.

10-15
30-33
22-26
1-2

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

Banking
None of these
Under pressurising
Back draughting

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Fuels and Combustion
Short/intense flame is produced during combustion of gaseous fuel by using

Very little excess air
High amount/current of combustion air
Low amount/current of combustion air
Preheated secondary air

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Fuels and Combustion
Coke having higher porosity has

Lower strength
Higher reactivity
All of these
Lower bulk density

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Fuels and Combustion
Highly reactive coke have lower

Both B and C
Porosity
Coke reactivity index (CRI)
Critical air blast (CAB) value

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Fuels and Combustion
Which of the following is unsuitable fuel for producer gas manufacture?

Anthracite
Coal having low fusion point of its ash
Coal having high fusion point of its ash
Coke

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