Fuels and Combustion
Low temperature oxidation of stored coal results in the

Increase in its oxygen content
Decrease in its carbon & hydrogen content
Decrease in its caking power & calorific value
All of these

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Fuels and Combustion
Cannel coal

All of these
Has a high volatile matter content and burns with a luminous smoky flame
Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
Is non-coking

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