Fuels and Combustion
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Is more difficult to ignite and produces a shorter flame
None of these
Is less liable to spontaneous combustion on storage
Requires smaller combustion space and less secondary air

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Fuels and Combustion
Anthracite coal

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

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Fuels and Combustion
Orsat apparatus is meant for

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

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