Why Is Either Pure Oxygen or Oxygen Diluted with Argon

question 1

Multiple Choice

Why is either pure oxygen or oxygen diluted with argon used in a converter instead of air?

• A) The oxygen concentration is too low to function efficiently at removing impurities.
• B) The carbon monoxide in air reacts with the iron to form a volatile, and toxic, iron carbonyl.
• C) The nitrogen in air will react with iron to form iron nitride that will make the iron brittle.
• D) Because it's cheaper.
• E) The carbon dioxide in air will cause the iron to oxidize and form rust.

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