Question

why mixture of oxygen and etyne is but t for wielding ?

Answer 1

if ethyne is burnt in oxygen, it gives a clean flame with high temperature (3000°C ) due to complete combustion of ethyne. Hence, This oxy-acetylene flame is used for welding.

Hope this help uh..  

Answer 2

Answer:

This is due to incomplete combustion caused by limited supply of air. However, if ethyne is burnt withoxygen, it gives a clean flame with temperature 30000 C because of complete combustion. This oxy-acetylene flame is used for welding. It is not possible to attain such a high temperature without mixing oxygen