Fuels and Combustion
Fussain

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
All of these
Is friable, charcoal like substance

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Fuels and Combustion
Lignite is

A coking coal
A high rank 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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Fuels and Combustion
Orsat apparatus is meant for

Finding out combustion efficiency
Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride
Gravimetric analysis of flue gas
None of these

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