class 8th combustion and flame question answer
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combustion
a chemical process in which a substance reacts with oxygen to give off heat is called combustion
flame
the substance which vaporise during burning, give flames. for example kerosene oil and molten wax rise through the wick and are vaporised during burning and form flames. charcoal, on the other hand,does not vaporise and so does not produce a flame
a chemical process in which a substance reacts with oxygen to give off heat is called combustion
flame
the substance which vaporise during burning, give flames. for example kerosene oil and molten wax rise through the wick and are vaporised during burning and form flames. charcoal, on the other hand,does not vaporise and so does not produce a flame
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