Question

The combustion reaction which occurs on its own, without any external supply of heat is called as:

a) Explosion

b) Spontaneous combustion

c) Fire

d) Rapid combustion

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Answer 1

Spontaneous combustion

hope it helps you

Answer 2

Answer:

b) Spontaneous combustion can occur when a substance with a relatively low ignition temperature (hay, straw, peat, etc.) begins to release heat. This may occur in several ways, either by oxidation in the presence of moisture and air, or bacterial fermentation, which generates heat.