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    A mixture of oxygen and ethyne is burnt for welding.Can you tell why a mixture of ethyne and air is not used ?

    Asked By Steven Levine

    1 ANSWERS

    • If air is used,incomplete combustion will take place giving a sooty flame and less heat is produced.When pure oxygen is used ethyne burns completely producuing large amount of heat and blue flame.This heat is sufficient for a metal to melt and welding is done.

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