Fuels and Combustion
Which of the following would require maximum amount of % excess air for complete combustion?

Pulverised coal
Coke oven gas
Furnace oil
Lump coal (fixed on chain grate)

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Fuels and Combustion
Fussain

All of these
Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation
Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal
Is friable, charcoal like substance

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