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What is spontaneous combustion?

  1. The combustion in which material bursts into flames
  2. The combustion that explodes
  3. The combustion that produces no heat and light
  4. The combustion that burns rapidly

Answer: The combustion in which material bursts into flames


Long Answer:

The combustion in which material suddenly bursts into flames is called spontaneous combustion. Example spontaneous forest fire are sometimes caused due to heat of sun light.