Iron That Is Made in a Blast Furnace Is Called

question 26

Multiple Choice

Iron that is made in a blast furnace is called pig iron.The pig iron is converted into steel by reducing its carbon content from roughly 4% to under 2% by

• A) reduction of the carbon with hydrogen gas.
• B) the addition of calcium oxide to form slag.
• C) vacuum filtration.
• D) electrolysis.
• E) reaction with oxygen to form CO₂(g).

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