JEE Main Chemistry question

Metals can be prevented from rusting by

(A)Connecting iron to a more electropositive metal, i.e. cathodic protectionCorrect
(B)Connecting iron to a more electropositive metal, i.e. anodic protection
(C)Connecting iron to a less electropositive metal, i.e. anodic protection
(D)Connecting iron to a less electropositive metal, i.e. cathodic protection

Answer: (A)

Solution

Connecting iron to a more electropositive (more reactive) metal makes that metal the sacrificial anode (it is

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Question ID VK-143823