define:-
Non luminous zone of candle.
Luminous zone of candle.
Dark zone of candle.
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Answers
There are three zones in the candle flame in which the non – luminous zone is the zone of complete combustion, the luminous zone has limited oxygen supply and is moderately hot and the third zone is the dark zone which does not burn due to the absence of air.
Complete step by step answer:
The area of combustion of combustible substances is called flame. It can be produced during burning. The substance which vaporizes produces the flame.
The candle flame has three zones which have different roles. All the zones of the candle flame have different colours and different temperatures. The three zones of a flame are:
Non – Luminous Zone: This zone is the zone of complete combustion. It has sufficient supply of air due to which complete combustion of fuel takes place. This is the outermost zone of the flame and is the hottest of all the zones. It poses the highest temperature among all the zones. It is quite thin as compared to the middle zone. The colour of this zone is blue.
Luminous zone: Luminous zone is bright and is the middle zone of candle flame. The temperature in this zone is moderate hot. It does not have a sufficient supply of oxygen. The colour of this zone is yellow.
Dark Zone: The temperature of this zone is least hot. It is black in colour. This zone does not support burning due to no supply of air.
Explanation:
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