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Name the refining method used to produce...

Name the refining method used to produce semiconductors.

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Zone refining.
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SUBHASH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Questions
  1. Explain the process of obtaining 'blister copper' from copper matte'' ...

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  2. Write the composition of copper matte.

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  3. Name the flux used to remove iron impurity from molten copper matte.

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  4. State the role of silica in the metallurgy of Copper.

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  5. During the extraction of aluminium by Hall-Heroult process at which el...

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  6. Draw labelled diagram of Hall-Heroult electrolytic cell for the extrac...

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  7. In the extraction of aluminium by electrolysis. (i) Give the composi...

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  8. During the extraction of aluminium by Hall-Heroult process at which el...

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  9. In the reaction of gold with aquaregia, oxidation state of Nitrogen ch...

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  10. Write the chemical reactions involved in the extraction gold using sod...

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  11. Name any two ores of zinc. How is zinc extracted from zinc oxide?

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  12. Name the reducing agent used in the extraction of zinc from zinc oxide...

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  13. Explain electrolytic refining.

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  14. Explain Zone refining.

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  15. Name the refining method used to produce semiconductors.

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  16. Write the principle involved in the zone refining.

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  17. Name the method of refining of silicon.

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  18. Explain Mond's process for refining nickel.

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  19. Explain van Arkel method for refining Zirconium and Titanium.

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  20. Name a metal refined by van Arkel method.

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