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प्रश्न
In order to protect iron from corrosion, which one will you prefer as a sacrificial electrode, Ni or Zn? Why? (Given standard electrode potentials of Ni, Fe and Zn are -0.25 V, -0.44 V and -0.76 V respectively.)
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उत्तर
Zn, it has a more negative electrode potential so will corrode itself in place of iron.
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