Question

hydrogen is used in a mixture with oxygen for a welding and cutting a metal​

Answer 1

Answer:

An oxyhydrogen torch (also known as hydrogen torch) is an oxy-gas torch that burns hydrogen (the fuel) with oxygen (the oxidizer). It is used for cutting and welding, metals, glass, and thermoplastics.

[I hope help]

Answer 2

Answer:

because when we use hydrogen with mixture of oxygen

we get the high temperature flame with blue colour if hydrogen is not burned the flame will not be in blue colour and of high temperature

so while welding the metal will be bured easily

u hope u understood my explanation