Iron can be protected by coating with zinc or tin. If coating is broken.A. iron will corrode faster if coated with zincB. iron will corrode faster if coated with tinC. iron will corrode faster in both casesD. iron will not undergo any corrosion in both cases.

Iron can be protected by coating with zinc or tin. If coating is broke

1.	Iron can be protected by coating with zinc or tin. If coating is broken.A. iron will corrode faster if coated with zincB. iron will corrode faster if coated with tinC. iron will corrode faster in both casesD. iron will not undergo any corrosion in both cases.
Answer» Correct Answer - B If coating is broken , iron will corrode faster if coated with tin . This is because their standard oxidation potentials are : ` E_(Zn\|Z^(2+))^(@) = + 0.76 V , E_(Fe\|Fe^(2+))^(@) = +0.44` V `E_(Sn\| Sn^(2+))^(@) = +0.14 V ` .

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Iron can be protected by coating with zinc or tin. If coating is broken.A. iron will corrode faster if coated with zincB. iron will corrode faster if coated with tinC. iron will corrode faster in both casesD. iron will not undergo any corrosion in both cases.

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