Question

The outermost zone of the candle flame is called _______
zone.​

Answer 1

Outermost zone / Non - Luminous zone : It is a zone of complete combustion of wax vapours and carbon particles, The air from the side of the flame mixes with unburnt wax vapours and carbon particles from the luminous zone and completely burns them to form carbon dioxide gas and water vapour.

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Answer 2

Answer:

the outermost zone of the candle flame is called hotter zone

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