Fuels and Combustion
Fussain

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

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Fuels and Combustion
Lignite is

A high rank coal
A coking coal
A black banded coal which burns with a non-smoky yellowish flame
Can be used for gasification and steam generation

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