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Fuels and Combustion

Fuels and Combustion
Which of the following gaseous fuels has the lowest calorific value?

Blast furnace gas
Gobar gas
Converter gas
Refinery gas

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Fuels and Combustion
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in

Either A or C without gain or loss of heat
Air
Either A or B
Oxygen

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Fuels and Combustion
Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.

Colour
Ash content
Volatile matter
Moisture content

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Fuels and Combustion
Blast furnace coke is made from coal by

Medium temperature carbonisation
Heating the coal in an oven in presence of air
Low temperature carbonisation
High temperature carbonisation

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Fuels and Combustion
Power alcohol as compared to straight run gasoline has lower

Specific gravity
Calorific value
Viscosity
Octane number

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Fuels and Combustion
Bunsen burner is an example of a/an __________ burner.

Outside mixing/diffusion flame/nozzle mix type
Inside mixing/premix type
Submerged combustion
Rotary cup

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