Question

Differentiate between spotaneous ,rapid, and explosion combustion?

Answer 1

Spontaneous combustion	Rapid combustion	Explosion
The combustion in which substances suddenly burst into flames, without the application of any apparent cause is called spontaneous combustion.	The combustion in which substances burn rapidly to produce heat and light is called rapid combustion. In rapid combustion, external heat must be supplied so that the substances can burn.	The combustion in which sudden reactions take place on ignition of some substances to produce heat, light, and sound is called explosion.
For example, sodium and phosphorus burn spontaneously in air, even when no external heat is provided to them.	For example, when a burning matchstick is brought near a gas stove (with its knob turned on), LPG burns rapidly to produce heat and light.	For example, fireworks on ignition produce heat, light, and sound.