JEE Main Chemistry question

Various methods have been employed for protecting iron from rusting. Which of the following is incorrect?

(A)Zinc plating is more permanent than chrome plating
(B)Zinc protects iron but gets corroded itself
(C)Tin plating is cheap but unreliable
(D)None of the aboveCorrect

Answer: (D)

Solution

Zinc genuinely acts as a sacrificial anode, corroding preferentially to protect iron, and galvanised (zinc) coatings are more durable against rust over time than thin chrome plating; tin plating is relatively inexpensive but, once

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Question ID VK-147562