Multiple choice

Why does charcoal not produce flame on burning?

  1. It vapourises and burns vigorously.

  2. It does not vapourise for producing flame.

  3. It never burns so do not produce flame.

  4. It changes in to liquid state while burning so do not produce flame.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Charcoal is composed primarily of carbon and does not vaporize at combustion temperatures. Flame formation requires fuel vaporization; since charcoal only undergoes surface combustion without producing vapors, it glows without producing a flame.

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