Multiple choice

What is the difference between spontaneous combustion and rapid combustion?

  1. In spontaneous combustion, the substance suddenly bursts into flames while in rapid combustion, the substance burns slowly for a very short time and then extinguishes itself.

  2. In spontaneous combustion, the substance burns rapidly into flames while in rapid combustion, the substance burns suddenly into flames without any external source of heat.

  3. In spontaneous combustion, the substance burns into flames without the application of external heat and in rapid combustion, the substance burns rapidly producing heat and light

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In spontaneous combustion, the substance bursts into flames on its own without the supply of heat from an external source and in rapid combustion, the substance burns rapidly producing heat and light when the combustion process is initiated.

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