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(D) The most effective method to protect the iron hull of a ship from corrosion is cathodic protection. In this process,a more reactive metal like mag

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Connecting with $Mg$ blocks

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(D) The most effective method to protect the iron hull of a ship from corrosion is cathodic protection. In this process,a more reactive metal like magnesium $(Mg)$ is attached to the iron hull. Since $Mg$ is more electropositive than iron,it acts as a sacrificial anode and gets oxidized instead of iron,thereby preventing the iron from rusting.

Which is the most effective method to protect the hull of a ship made of iron?

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