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(i) Indicate the principle behind the me...

(i) Indicate the principle behind the method used for the refining of zinc.
(ii) What is the role of silica in the extraction of copper ?
(iii) Which form of iron is the purest on commercial scale ?

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Revision Exercises(Short answer questions)
  1. EXTRACTION OF ALUMINIUM

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  17. (i) Write composition of copper matte. (ii) Write balanced equations...

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  18. (a) Name the method of refining which is (i) used to obtain semicond...

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  19. Describe the role of the following : (i) NaCl in the extraction of ...

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  20. Match the following processes of metallurgy with their corresponding o...

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