Multiple choice

Which of the following materials does not produce flame on burning?

  1. Candle

  2. Magnesium

  3. Kerosene stone

  4. Charcoal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Charcoal is a solid fuel that undergoes combustion without vaporizing, so it only glows without producing a flame. Materials like candles, magnesium, and kerosene vaporize during burning, creating a visible flame when these vapors combust.

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