Question

Which of the following metals corrodes readily in moist air.

• A. Gold
• B. Silver
• C. Nickel
• D. Iron

Answer 1

Answer: (D)

Iron

Answer 2

Iron; $Fe + H_{2}O ⥂ / ⥂ H^{+} \rightarrow Fe_{2}O_{3}.xH_{2}O$