Multiple choice

Which of the following is not an example of spontaneous combustion?

  1. Phosphorus burning in air

  2. Forest fire due to lightning

  3. Burning of charcoal

  4. Combustion of coal dust in a coal mine

  5. Forest fire due to heat of the sun

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

Burning of charcoal cannot happen spontaneously.