Multiple choice

Candle contains _________ zones in its flame.

  1. 3

  2. 4

  3. 5

  4. 6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A candle flame has three distinct zones: (1) Inner dark zone - incomplete combustion due to insufficient oxygen, (2) Middle luminous zone - moderate combustion with yellow glow, and (3) Outer non-luminous zone - complete combustion with blue flame. This three-zone structure is characteristic of hydrocarbon flames.

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