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Fuels and Combustion

Fuels and Combustion
Mineral matter content (M) and ash content (A) in coal are approximately related as

M = 2A
M = 1.5A
M = A
M = 1.1A

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Fuels and Combustion
When the coal is heated in absence of air, it is called its

Deoxidation
Coalification
Gasification
Carbonisation

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Fuels and Combustion
Bomb calorimeter is used for the determination of calorific value of the __________ fuels.

Solid
Gaseous
Both B and C
Liquid

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Fuels and Combustion
Laboratory gas is obtained by the cracking of

Gasoline
Fuel oil
Diesel
Kerosene

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Fuels and Combustion
Air/gas ratio for complete combustion will be the highest for

LPG
Coke oven gas
Gobar gas
Carburetted water gas

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Fuels and Combustion
Presence of nitrogen in combustion air does not reduce the

Amount of heat liberated
Flue gas temperature
Flame temperature
Any of the above

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