Fuels and Combustion
Presence of free moisture in coal is most disadvantageous during

None of these
Its pulverisation (as it requires more power)
Combustion of fire slacks on the grates
Handling (e.g. when emptying wagons)

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Fuels and Combustion
Pick out the wrong statement.

Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel
Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal
Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing
None of these

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