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Fuels and Combustion

Fuels and Combustion
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

Both B & C
CO
H₂O
CO₂

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Fuels and Combustion
During combustion of coal on grate, clinker formation is increased by the

Use of preheated primary air
Use of thick fire bed
Low fusion point of ash (< 1100° C)
All of these

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

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

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Fuels and Combustion
Benzol is used

Both A & B
Neither A nor B
For producing benzene, tolune & xylene by its distillation
As a motor fuel blend

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Fuels and Combustion
Which of the following is a lean fuel gas?

Blast furnace gas
Natural gas
LPG
Coke oven gas

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Fuels and Combustion
Coking time in narrow by-product coke ovens is around __________ hours.

48
80
8
18

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