Multiple choice

The substances that do not undergo combustion are called non-combustible substances. Which of the following is a non-combustible substance?

  1. Charcoal

  2. Kerosene oil

  3. Alcohol

  4. Copper

  5. Wood

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Copper is a non-combustible substance.