Q. 84.1( 7 Votes )

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Answer :

The electron dot structure of Ethyne is as follows:


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We can’t use a mixture of ethyne and air for the welding purpose because air has less amount of Oxygen present in it than that of pure Oxygen, due to which incomplete combustion occurs and the temperature which is needed for welding air not attained. Therefore Pure Oxygen is used as it supports complete combustion.


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