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Fuels and Combustion

Fuels and Combustion
Laboratory gas is obtained by the cracking of

Gasoline
Kerosene
Fuel oil
Diesel

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

Gobar gas
Refinery gas
Blast furnace gas
Converter gas

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Fuels and Combustion
Combustion reaction of fuels is a/an __________ reaction.

Exothermic
Auto catalytic
None of these
Endothermic

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Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

1350
1250
1100
1400

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Fuels and Combustion
Traces of tar fog present in the coke oven gas is removed by

Wet packed scrubber
Cyclone separator
Washing with monoethanolamine
Electrostatic precipitator

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Fuels and Combustion
Which is the most matured coal?

Semi-anthracite
Lignite
Anthracite
Bituminous

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