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Describe how the following changes are b...

Describe how the following changes are brought about Impure copper into pure copper.

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ASSAM ACADEMIC CENTRE-General Principles of Processes of Isolation of Elements-Example
  1. Explain the role of the following in the processes mentioned: Cryolite...

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  2. Describe how the following change are brought about pig iron into stee...

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  3. Describe how the following changes are brought about Impure copper int...

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  4. The reaction, Cr2O3 + 2Al rarr Al2O3 + 2Cr (DeltaG^@ = -421KJ) is ther...

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  5. Is it true that under certain conditions, Mg can reduce SiO2 and Si ca...

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  6. Copper can be extracted by hydrometallurgy but not zinc. Explain.

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  7. Explain the role of the following in the processes mentioned: Depressa...

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  8. Why is the extraction of copper from pyrites more difficult than that ...

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  9. Outline the prinicples of refining of metals by the following methods....

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  10. Explain Column chromatography.

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  11. Out of C and CO, which is a better reducing agent at 673 K?

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  12. Name the common elements present in the anode mud in electrolyte refin...

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  13. Write down the reaction taking place in different zones in the blast f...

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  14. Write the chemical reactions which take place in the following operati...

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  15. Explain the role of the following in the processes mentioned: Silica i...

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  16. What is meant by the term 'chromatography'?

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

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  18. Name the method used for the refining of Nickel.

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  19. Giving examples, differentiate between 'roasting' and 'calcination'.

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  20. How is 'cast iron' different from pig iron?

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