Fuels and Combustion
Naphthalene is removed from coke oven gas by

Adsorbing on bog iron bed
None of these
Absorbing in vetro-coke solution
Scrubbing with wash oil (a petroleum product)

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Fuels and Combustion
Lignite is

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

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