distinguish between the three zones of candle flame
Answers
the outermost zone is the hottest among all zones and is blue in colour.this is due to complete combustion.
the middle zone of flame is moderately hot and is yellow in colour ,partial combustion of fuel takes place here.
the innermost zone of flame is least hot and is black in colour. This is due to presence of unburnt wax particles.
1. Innermost zone :- This zone consist of unburnt wax vapour given off by the molten wax. it is the coldest part of the flame.
2. Middle zone or Luminous zone :- In this zone partial combustion of wax vapours take place with the liberation of a lot of energy. This energy partly decomposes the wax vapour into carbon particles. This zone of the flame is hotter than the dark inner zone; it is yellow in colour.
3. Outermost zone or Non Luminous zone:- It is a zone of complete combustion of wax vapours and carbon particles. The air, from the sides of the flame mixes with unburnt wax vapours and carbon particles and burns them completely to form carbon dioxide gas and water vapour. it is the hottest part of the flame.
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