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Iron does not rust when coating is broke...

Iron does not rust when coating is broken in a galvanised iron pipe but rusting occurs if coating of tin over iron is broken. Explain.

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MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. write two differences between primary cells and secondary cells.

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  2. Write the cell reaction which occur in lead storage battery:(1) when t...

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  3. Iron does not rust when coating is broken in a galvanised iron pipe bu...

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  4. State two advantages of H(2) -O(2) fuel cell over ordinary cell.

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  5. Predict the products of electrolysis in each of the following ? A d...

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  6. State and explain Faraday’s laws of electrolysis.

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  7. State and explain Faraday's laws of electrolysis. How many grams of ch...

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  8. Define and explain electrochemical equivalent.How is it related with c...

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  9. Define electrochemical equivalent and chemical equivalent. How are th...

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  10. Define 'specific conductance' and 'equivalent conductance'. How are th...

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  11. A 0.1N solution of NaCl has a specific conductance of 0.00112 ohm^-1 c...

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  12. State and explain Kohlrausch's law of independeat migration of ions.

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  13. State and explain Kohlrausch's law. How can this law be used to find e...

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  14. write a short note on : (a) kohlrausch's law

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  15. (b) Galvanic cell

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  16. Define electrode potential and Nernst equation.

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  17. Write notes on (i) Electroplating (ii) Electrorefining (iii) Gal...

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  18. How does molar conductivity vary with concentration for weak and stron...

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  19. The resistance of a conductivity cell containing 0.001 M KCl solution ...

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  20. How does molar conductivity vary with concentration for weak and stron...

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