Smelting of Iron Ore Involves ______________

Multiple Choice

Smelting of iron ore involves ______________.

A) washing the ore with acid to extract iron
B) dissolving the ore in hot water to separate iron and aluminum
C) oxidizing iron to ferric oxide and then adding silicon and boron
D) heating beyond ironʹs melting point and combining the material with carbon
E) crushing and heating the ore at its melting point