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Outline the principles of refining of metals by the following methods: (i) Zone refining

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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-NCERT EXERCISE QUESTIONS
  1. What is meant by the term, chromatography?

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  2. What criterion is followed for the selection of the stationary phase i...

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  3. Describe a method for refining nickel.

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  4. How can you separate alumina from silica in a bauxite ore associated w...

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  5. Giving examples, differentiate between roasting and calcination.

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  6. How is cast iron different from pig iron?

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  7. Why copper matte is put in silica lined converter?

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  8. Differentiate between minerals and ores.

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  9. What is the role of cryolite in the metallurgy of aluminium?

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  10. How is leaching carried out in case of low grade Cu ores ?

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  11. Why is zinc not extracted from zinc oxide through reduction using CO?

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  12. The value of (Delta(f)G^(@)) for formation of Cr(2)O(3) is -"540kJ.mol...

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  13. Out of C and CO, which is a better reducing agent for ZnO?

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  14. The choice of a reducing agent in a particular case depends on thermod...

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  15. Name the processes from which chlorine is obtained as a by-product. Wh...

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

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  17. Outline the principles of refining of metals by the following methods:...

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

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  19. Outline the principles of refining of metals by the following methods:...

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  20. Predict conditions under which Al might be expected to reduce MgO.

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