Question

what is meant by combustion

Answer 1

Combustion is a chemical process or a reaction between Fuel (Hydrocarbon) and Oxygen. When fuel and oxygen react it releases the heat and light energy. Heat and light energy then result in the flame. 

Answer 2

COMBUSTION is a chemical change that produces heat and light.

It is also called burning.

It is actually a high temperature exothermic redox chemical reaction between the reductant and an oxidant.

EXAMPLE: oxidation accompanied by heat and light.