JEE Main 2024 Chemistry question

Which of the following statements is not correct about rusting of iron?

(A)Dissolved acidic oxides SO₂, NO₂ in water act as catalyst in the process of rusting.
(B)Rusting of iron is envisaged as setting up of electrochemical cell on the surface of iron object.
(C)When pH lies above 9 or 10, rusting of iron does not take place.
(D)Coating of iron surface by tin prevents rusting, even if the tin coating is peeling off.Correct

Answer: (D)

Solution

If the tin coating peels off, iron (being more active than tin) is exposed to air and moisture and rusts, so statement (D) is not correct.

Question ID VK-016614