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Fuels and Combustion

Fuels and Combustion
Pick the odd man out.

Pitch creosote mixture
Wood
Briquettes
Oil gas

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Fuels and Combustion
Caking index of coal blend used for blast furnace coke making is about

22
36
12
8

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

None of these
Banking
Back draughting
Under pressurising

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Fuels and Combustion
With increase in calorific value of fuels, their adiabatic flame temperatures

May increase or decrease ; depends on the quantity of products of combustion
Remain unchanged
Decrease
Increase

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Fuels and Combustion
The calorific value of L.D. converter gas is about __________ Kcal/Nm³ .

10000
4500
800
1800

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Fuels and Combustion
Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces

Lower amount of hydrogen
Both A & B
Higher amount of both methane and hydrogen
Higher amount of methane

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