JEE Advanced Chemistry question

Which forms protective and non-corrosive oxide layer?

(A)CrCorrect
(B)Ni
(C)Zn
(D)Cu

Answer: (A)

Solution

Chromium reacts with atmospheric oxygen to form a thin, extremely adherent and chemically inert layer of on its surface, which protects the underlying metal from further corrosion — this is the basis of chromium

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Question ID VK-159618