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Question

Explain the different zones observed in a candle flame. Which one of them is the hottest zone? [5 MARKS]


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Solution

Different Zones : 1 Mark each
Hottest Zone : 1 Mark
The three zones of the candle flame are:

  • Blue zone: It is at the outermost zone of the flame. It is the hottest part of the flame due to complete combustion.
  • Black zone: Around the wick, there is a zone which is black in colour, where there is no combustion because of zero availability of oxygen.
  • Yellow zone: This is the middle zone of partial combustion.
The outermost zone of the flame is the hottest since complete combustion takes place here.

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