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Outline the principles involved in the f...

Outline the principles involved in the following methods of refining of metals.
Zone refining.

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Define calcination and roasting.

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  2. State the role of silica in the metallurgy of copper.

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  3. Describe the role of the following in the processes mentioned: Iodine ...

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  4. Describe the role of the following : NaCN in the extraction of silver ...

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

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  6. Outline the principle of refining of metals by electrolytic refining.

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  7. Outline the principles involved in the following methods of refining o...

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  8. Outline the principles involved in the following methods of refining o...

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  9. Explain what is observed :- electric current is passed through a collo...

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  10. Explain what is observed :- when a beam of light is passed through a c...

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  11. Explain what is observed :- an electrolyte, NaCl is added to hydrated ...

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  12. Define the following term : Micelles.

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  13. Explain the following: Peptization .

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  14. Define the following term : Electophoresis .

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  15. Explain how the phenomenon of adsorption finds application in the foll...

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  16. Give four examples of heterogeneous catalysis.

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  17. Explain how the phenomenon of adsorption finds application in the foll...

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  18. What is adsorption isotherm ?

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  19. Write notes on Hardy Schulze Rule ?

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  20. What are emulsions ? What are their different types ? Give one example...

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