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(I)The outermost zone is the hottest among all zones and is blue in color, and this is due to complete combustion. It is the non-luminous part of the flame. The middle zone of the candle flame is moderately hot and is yellow in color, and partial combustion of fuel takes place. It is bright part of the fire.
(iii)The outermost zone is called the zone of complete combustion. It is because it has no unburnt particles because it receives more amount of oxygen.
Hope it will help u..
(iii)The outermost zone is called the zone of complete combustion. It is because it has no unburnt particles because it receives more amount of oxygen.
Hope it will help u..
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