Question

Name one substance which undergoes spontaneous combustion(or burns in air at room temperature).

Answer 1

Answer:

phosphorus burns spontaneously in air

Answer 2

Phosphorous

Explanation:

Spontaneous combustion is the phenomenon in which a substance unexpectedly bursts into flame without apparent cause. There is no external source of heat or fire involved. The substance catches fire on its own and burns. The combustion in which no external heat is given is known as spontaneous combustion.  

An example of spontaneous combustion is the burning of white phosphorus in air.