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What is a Flame?
When any substances are burnt with the help of oxygen, a hot luminous gas emerges out. This gas is called flame.
Examples include kerosene oil, wax.
Structure of Flame:
Below are the layers of flame:
Outermost zone: It is blue in colour and is hottest amongst all the zones. In this portion, complete combustion takes place.
Middle zone: It is yellow in colour and is somewhat hot. In this portion, partial combustion takes place.
Innermost zone: It is black in colour and is coolest amongst all the zones.
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