From which substance does we get a flame?
Answers
Answer:
Explanation:
A flame is the region where combustion (or burning) of gaseous substabces takes place.
So, a flame is produced only when gaseous substances burn. All the gaseous fuels burn with a flame but only those solid and liquid fuels which vaporise on heating (to form a gas), burn with a flame. For example, cooking gas (LPG) is a gaseous fuel which burns with a flame but wax and kerosene oil are solid and liquid fuels respectively, which vaporise (or form gas) on heating and hence burn with flame.
Flames are of two types : Blue flame and Yellow flame.
When fuels burn, the type of flame produced depends on the proportion of oxygen (of air) which is available for the burning or combustion of fuel.
When the oxygen supply (or air supply) is sufficient, then the fuels burn completely producing a blue flame. When the oxygen supply is insufficient, then the fuels burn incompletely producing mainly a yellow flame.
Those solid and liquid fuels which do not vaporise on heating, burn without producing a flame. For e.g. Coal, Charcoal.
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