Fuels and Combustion
In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

Alkaline pyragllol solution
None of these
Potassium hydroxide
Cuprous chloride

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Fuels and Combustion
Anthracite can be used for

Making carbon electrodes
All of these
Recarbonising steel
Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke

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Fuels and Combustion
Anthracite coal

Burns with short, bluish, yellow-tipped flame producing very little smoke
Ignites more easily than bituminous coal
Contains more volatile matter than bituminous coal
Is essentially a coking coal

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