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Name the method of refining to obtain si...

Name the method of refining to obtain silicon of high purity.

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Zone refining is used to obtain silicon of high purity.
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U-LIKE SERIES-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-LONG ANSWER QUESTIONS-I
  1. What is the role of silica in the extraction of copper?

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  2. Which form of the iron is the purest form of commercial iron?

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  3. Name the method of refining to obtain silicon of high purity.

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  4. What is the role of SiO(2) in the extration of copper?

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  5. What is the role of depressant in froth floatation process?

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  6. Explain the principle and working of the method of electrolytic refini...

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  7. State the role of Depressant in froth floatation process.

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  8. State the role of Silica in the metallurgy of copper.

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  9. State the role of Graphite rod in the electrolytic reduction of alum...

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  10. Explain the role of each of the following in the extraction of metals ...

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  11. Explain the role of each of the following in the extraction of metals ...

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  12. Explain the role of each of the following in the extraction of metals ...

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  13. Write down the reactions which occur in upper, middle and lower zones ...

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  14. Describe the role of NaCN in the extraction of gold from gold ore. ...

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  15. Describe the role of SiO(2) in the extraction of copper from copper ...

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  16. Describe the role of Iodine in the refining of zirconium. Write ch...

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  17. State briefly the principle involved in the following operations in me...

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  18. State briefly the principle involved in the following operations in me...

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  19. Account for the following facts : The reduction of a metal oxide is ...

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  20. Account for the following facts : The reduction of Cr(2)O(3) with Al...

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