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(a) What are calcination and roasting ? ...

(a) What are calcination and roasting ? In which type of ores are these processes used ?
(b) Which metals are generally extracted by electrolyte processes ? What position do these metals occupy in the periodic table ?

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Revision Exercises(Short answer questions)
  1. (a) How can copper be extracted from hydrometallurgical process ?

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  2. Give Mond process for refining of nickel.

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

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

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  5. EXTRACTION OF ALUMINIUM

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

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

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

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

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

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

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  12. (i) Name the method of refining of metals such as Germanium. (ii) In...

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  13. All ores are minerals while all minerals are not ores because :

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  14. (a) What are the two requirements for vapour phase refining? Write the...

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  15. Name the principal ore of aluminium. Explain the significance of leach...

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  16. (a) Write the principle of method used for the refining of germanium ...

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  17. Describe the role of (i) NaCN in the extraction of gold from its ore...

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  18. Outline the principles of refining of metals by the following methods....

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  19. (i) Name a metal refined by Van Arkel method. (ii) Explain the proce...

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  20. (i) Explain zone refining method for refining of metals. (ii) Explai...

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