Question

Why outermost zone of a flame is called non luminous zone

Answer 1

Hey dear!!!

➡️The outermost zone: The outermost zone also known as non-luminous zone is the zone of complete combustion. The ample presence of oxygen (or air) aids in complete combustion. It is the hottest zone of the candle flame and does notproduce much light. It is blue in colour.

Answer 2

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✴The candle flame has three zones

1) inner ( Dark zone)

2) middle ( Luminous zone)

3) outer ( Non luminous zone)

➡The outer zone Is called non luminous zone.

➡This zone appears in blue color.

➡As the outer most zone has much oxygen supply compared to other zones. of flame. it leads to complete combustion.

➡It is hottest zone than three zones.

➡It is called non luminous because it do not produce much light.

➡Hence it is called non luminous zone.

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