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Zinc is coated over ion iron to prevent rusting of iron because :

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Zinc is coated over ion iron to prevent rusting of iron because :
A. `E_(red)^(@)` of zinc is greater than that of Fe
B. `E_(ox.)^(@)` of Zn is greater than that of Fe
C. `E_(red)^(@)` of Zn is nearly equal to that of Fe
D. Zn is cheap
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Correct Answer - B
`E_(o x)^(@)` of Zn is greater than that of Fe hence zinc will protect Fe from rusting by a process caled galvanisation.
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