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Fuels and Combustion

Fuels and Combustion
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always

> 1
1
Unpredicatable

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Fuels and Combustion
Dry air required to burn 1 kg of carbon completely may be around __________ kg.

2
11
20
38

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Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

Boy's
Junker's
None of these
Bomb

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Fuels and Combustion
Soft coke is not

Produced by low temperature carbonisation of coal
None of these
A domestic fuel
Used in blast furnaces

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

Back draughting
Banking
None of these
Under pressurising

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Fuels and Combustion
Ignition temperature of a fuel in air is __________ that in pure oxygen.

Either more or less; depends on the type of fuel
Equal to
Less than
More than

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