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Which metals can be used in the cathodic...

Which metals can be used in the cathodic protection of `Fe` against rusting.

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A metal which is more electropositive than iron such as Al, Zn, Mg.
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(i) Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals. (ii) Ionic compounds have generally high melting points. (iii) Hydrogen is not a metal but is has been assigned a place in the reactivity series of metals. (iv) The galvanised iron article is protected against rusting even if the zinc layer is broken.

Which among the following metals is employed to provide cathodic protection to iron ?

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PRADEEP-ELECTROCHEMISTRY-ADDITIONAL QUESTIONS(VERY SHORT ANSWER QUESTIONS)
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  5. Name the electrolyte used in (i) dry cell (ii) mercury cell.

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  6. What is a primary cell? Give an example.

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  7. Give an example of a secondary cell.

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  8. Write the name of a cell used in small watches.

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  9. Which cells were used in the Apollo space program? What was the produc...

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  10. Define fuel cell?

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  11. How does H(2)-O(2) fuel cell operate?

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

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  13. Write the name of the electrolyte used in fuel cell.

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  14. What is the overall electrochemical reaction taking place in rusting?

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  15. Out of zinc and tin which one protects iron better even after cracks a...

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  16. Define corrosion. What is the chemical formula of rust ?

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  17. Why Cr is used for coating Fe ?

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  18. What would happen if the protective tin coating over an iron bucket i...

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  19. Which metals can be used in the cathodic protection of Fe against rust...

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  20. Rusting of Fe is quicker in saline water than in ordinary water.

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