What os combustion? Which condition is …

The process of burning of a substance in the presence of air and oxygen with the liberation of heat & light is called combustion. The following conditions are necessary for combustion to take place. PRESENCE OF A COMBUSTIBLE SUBSTANCE:Combustion is only possible if the substance is combustible. PRESENCE OF A SUPPORTER OF COMBUSTION:The adequate supply of a supporter of combustion(e.g.,oxygen) is essential for combustion. ATTAINMENT OF IGNITION TEMPERATURE:A substance starts to burn only after it has attained a certain minimum temperature.The temperature at which a particular substance burns in the presence of air is called its ignition temperature. A substance can not catch fire if its temperature is low than its ignition temperature.

The chemical process in which a substance reacts with oxygen to give off heat is called combustion.
Conditions necessary for Combustion
There are three conditions which are necessary for combustion to take place.
1.Presence of a combustible substance. That is, a substance which can burn.
2.Presence of a supporter of combustion like presence of oxygen in air.
3.Heating the combustible substance to its ignition temperature.

If any of these conditions is not met, combustion does not take place.