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What is the role of graphite rod in the electrometallurgy of aluminium?

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Revision Exercises(Short answer questions)
  1. Define the following terms : (a) Roasting (b) Electro metallurgy ...

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  2. Describe how the following changes are brought about: (i)Pig iron i...

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  3. What is the role of graphite rod in the electrometallurgy of aluminium...

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  4. Describe the principle involved in each of the following processes: ...

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  5. Explain the role of the following in the processes mentioned : (a) ...

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  6. Write the principle of the following (a) Zone refining (b) Froth f...

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  7. (a) Differentiate between roasting and calcination. (b)How is cast ...

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  8. (a) Which solution is used for the leaching of silver metal in the pr...

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  9. (a) Give an example of zone refining of metals. (b) What is the role ...

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  10. (a) How can copper be extracted from hydrometallurgical process ?

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  11. Give Mond process for refining of nickel.

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  12. (a) What are calcination and roasting ? In which type of ores are thes...

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  13. Define the following terms: (i) Ore benefaction (ii) Hydrometallur...

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  14. EXTRACTION OF ALUMINIUM

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  15. What type of ores can be concentrated by froth floatation process ? Ex...

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  16. (i) Indicate the principle behind the method used for the refining of ...

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  17. (a) Why is zinc blende roasted before carbon reduction? Answer with ba...

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  18. How is zinc obtained from zinc blende ? Give chemical reactions.

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  19. Explain the steps involved in the vapour phase refining of Ni and Zr.

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  20. (a) Name the role of Na(3)AlF(6) in the electrolytic reduction of alum...

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