why wood produce a continuous flame
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1) Substances ( Solid, Liquid, Gases ) which produce vapors will burn with flame.
Wood is a solid fuel but it do not burn with a flame. This is because wood do not form vapors. However, when the wood is ignited the small amount volatile matter present in it vaporize on heating burn with a flame . When there is no more volatile matter left in wood, it just glows red like a charcoal.
2) A blue flame is produced during the complete combustion of substance. A yellow flame is produced during incomplete combustion of a substance. In Kerosene stove if yellow flame is observed then it indicates the incomplete combustion which may be due to the insufficient supply of oxygen gas.
Wood is a solid fuel but it do not burn with a flame. This is because wood do not form vapors. However, when the wood is ignited the small amount volatile matter present in it vaporize on heating burn with a flame . When there is no more volatile matter left in wood, it just glows red like a charcoal.
2) A blue flame is produced during the complete combustion of substance. A yellow flame is produced during incomplete combustion of a substance. In Kerosene stove if yellow flame is observed then it indicates the incomplete combustion which may be due to the insufficient supply of oxygen gas.
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