AIPMT PRELIMS 2001 Chemistry Corrosion MCQ Question
The most convenient method to protect the bottom of ship made of iron is :
Coating it with Red lead oxide
White tin plating
Connecting it with Mg block
Connecting it with Pb block
Correct Answer
Detailed Explanation
Connecting with a Mg block acts as a sacrificial anode, protecting the iron from corrosion through galvanic action.
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