A) Making iron cathode
B) Putting it in saline water
C) Both
D) None
Correct Answer: A
Solution :
Iron loses electrons to form \[{{\operatorname{Fe}}^{-2}}\]only when it acts as cathode. The iron object to be protected from rusting is connected to a more active metal. The iron acts as cathode and protecting metal acts as anode. It is called cathodic protection i.e electrical protection.
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