Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of

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Iron objects can be protected from corrosion through a process called cathodic protection, where they are connected to a more reactive metal. Magnesium (Mg) is more reactive than iron, so it acts as a sacrificial anode, corroding in place of the iron.

Iron Objects Such as Storage Tanks and Underground Pipelines Can