The different zones of a candle flame are marked by the letters, A, B and C. Which of the following is correct?

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B is the hottest part of the flame

C is moderate hot

A is the hottest part of the flame

A is moderate hot whereas C is the coldest part

answer is C.

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Detailed Solution

There are three zones in a flame. They are:
A: Non-luminous zone
B: Luminous zone
C: Dark zone
●        The zone of full combustion is the non-luminous zone. It is the hottest part of the candle flame and produces very little light.
●        The middle zone is a fairly heated zone with a restricted supply of oxygen.
●        C is a black zone because it does not allow for burning. Because there isn't enough air.

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