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Fuels and Combustion

Fuels and Combustion
The hottest part of the flame lies in its____zone.

Yellow
Non-luminous
Luminous
Unburnt gases

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Fuels and Combustion
Laboratory gas is obtained by the cracking of

Gasoline
Kerosene
Fuel oil
Diesel

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Fuels and Combustion
Which is the most matured coal?

Lignite
Anthracite
Bituminous
Semi-anthracite

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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
Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

12
24
18
6

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Fuels and Combustion
Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

None of these
Pyrogallol solution
Ammoniacal cuprous chloride
KOH

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