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

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Fuels and Combustion
Rate of low temperature oxidation of coal due to bad storage conditions

Does not vary with increase in surface area
Is more for low volatile coal compared to high volatile coal
Is accelerated by storage in large heaps with small surface to volume ratio
Decreases with increase in surface area

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