Question

Differentiate between complete and incomplete combustion. [3 MARKS]

Answer 1

S. No.	Complete combustion	Incomplete combustion
1	The combustion reaction that takes place in the presence of a sufficient or abundant amount of oxygen is called a combustion reaction.	The combustion reaction takes place in the presence of an insufficient amount of oxygen.
2	In this type of combustion, the flame is of blue colour.	In this type of combustion, flame is of yellow colour.
3	It will produce no smoke	It will produce soot
4	In this reaction, carbon dioxide is the primary product formed	In this reaction, carbon monoxide is the primary product formed
5	Example: Combustion of LPG	Example: Burning of wood that causes air pollution