Protective gas used in the annealing furnace for steel coil comprises of Options: A . &nbsp95% N₂ + 5% H₂ B . &nbsp5% H₂ + 9% N₂ C . &nbsp100% CO D . &nbsp100 %H₂

Protective gas used in the annealing furnace for steel coil comprises of

Question

Protective gas used in the annealing furnace for steel coil comprises of

Options:

A . 95% N₂ + 5% H₂

B . 5% H₂ + 9% N₂

C . 100% CO

D . 100 %H₂

Answer: Option A

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