Question

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

Answer 1

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.