1 Define complete combustion and incomplete combustion 2 Write the 3 conditions for combustion 3 Explain Soda acid fire extinguisher 4 Write 4 points about outer zone of a candleflame 5 Give 2 examples of solid ,liquid and gaseous fuels 6 Why is Hydrogen not used as fuel at homes. 7 Write the names of products we get by fractional distillation of crude oil
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1) Complete combustion takes place in the presence of a sufficient amount of oxygen
Incomplete combustion reaction takes place when there is an insufficient amount of oxygen supply.
2)Heat, Oxygen and Fuel.
3) Soda acid type extinguisher acts by cutting off supply of air. It acts on all types of fire except due to electrical and inflammable liquids. The carbon dioxide is liberated by the action of acid on baking soda. It increases the percentage of carbon dioxide in air (CO2 is non supporter of combustion).
4) Luminous zone
Non-luminous zone
Dark inner zone
Blue zone
Explanation Hope it's help you
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