In order to understand the structure of a flame, light a wax candle and watch its flame. Carefully note the different coloured zones in the flame. Starting from the base of the flame, a flame has three zones. Check the below figure and try to answer the following question

The diagram shows different zones of candle flames. Label 2, 3, 4 also give the colour of the zone.

Explanation

1. Non-luminous zone-Blue colour
2. Dark zone-Black colour
3. Luminous zone-Yellow colour