give 3 conditions which are necessary for combustion?
1. Combustible substance. 2. Ignition temperature. 3. Supporter of combustion. (oxygen).Further combustion is divided into two types as Complete combustion and Partial combustion. In complete combustion there is required supply of O2 and Carbon atoms are fully changed into CO2. (eg; Bunsen burner) In partial combustion there is less supply of O2, due to this part of carbon atoms are changed into CO2. As a result harmful gases like CO is also produced.