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Rusting on the surface of iron involves ...

Rusting on the surface of iron involves :

A

`Fe(s)rarr Fe^(2+)(aq)+2e^(-)` (at anodic site)

B

`O_(2)(g)+4H^(+)(aq)+4e^(-)rarr 2H_(2)O(l)` (at cathodic site)

C

`4Fe^(2+)(aq)+O_(2)(g)+4H_(2)O(l)rarr 2Fe_(2)O_(3)(s)+8H^(+)`

D

`Fe_(2)O_(3)(s)+ xH_(2)O(l)rarr Fe_(2)O_(3). xH_(2)O`

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The correct Answer is:
A, B, C, D
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