Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Corrosion of iron is essentially an electrochemical phenomenon where the cell reactions are
A
is oxidised to 
and dissolved oxygen in water is reduced to 
B
is oxidised to 
and 
is reduced to 
C
is oxidised to 
and 
is reduced to 
D
is oxidised to 
and 
is reduced to 
Text Solution
Verified by ExpertsThe correct answer is:
A
(anode reaction)
(cathode reaction)
The overall reaction is
may be dehydrated to iron oxide 
, or further oxidised to 
and then dehydrated to iron rust, 
.
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