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In corrosion of iron...

In corrosion of iron

A

electrons flow from anode to cathode through the metal while ions flow through the water droplets

B

an electrochemical cell (galvanic cell ) is formed in which Fe acts as anode and cathode where `O_(2)` is reduced

C

dissolved `O_(2)` oxidises `Fe^(2)` to `Fe^(3+)` before it is deposited as rust `(Fe_(2)O_(3)."xH"_(2)O)`

D

all of the above takes place

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The correct Answer is:
D
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