Question

blue zone of a candle flame is the coolest​

Answer 1

Answer:

Explanation:

The outer zone of a flame is blue:It is a non-luminous zone.In this zone,complete combustion of the fuel takes place because there is plenty of air around it. The outermost zone has the highest temperature in the flame.It is the hottest part of the flame.It is quite thin as compared to middle zone

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Answer 2

Answer:

3)The outer zone of a flame is blue:It is a non-luminous zone.In this zone,complete combustion of the fuel takes place because there is plenty of air around it. The outermost zone has the highest temperature in the flame.It is the hottest part of the flame.It is quite thin as compared to middle zone.