What makes the zone of flame appear blue
Dear student,
The different zones present in a candle flame are as follows.
1. Innermost zone or the luminous zone (Black or grey)
2. Middle zone (Yellow)
3. Outer zone or the non-luminous zone (Blue)
Characteristics of these zones are tabulated as follows:
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Different zones of a candle
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Innermost zone
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Middle zone
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Outermost zone
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|
Temperature
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Minimum
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Moderate
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Maximum
|
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Combustion
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Zone of unburnt carbon particles
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Zone of partial combustion
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Zone of complete combustion
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Due to the complete combustion in the outermost zone, the flame appears blue in colour and it is also the hottest part of the flame.
Regards