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Explain the role of the following : SiO2...

Explain the role of the following : `SiO_2` in the extraction of copper.

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Which methods are usually employed for purifying Nickel.

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

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  3. Explain the role of the following : SiO2 in the extraction of copper.

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  4. Name the method used for removing gangue from sulphide ores.

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  5. How is wrought iron different from steel?

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  6. Name the principal of the method of electrolytic refining of metals. ...

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  7. What is the role of depressant in froth flotation process ?

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  8. Name the method used for refining of Zirconium.

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  9. What is the role of coke in the extraction of iron from its oxides?

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  10. Why is the reduction of a metal oxide easier if the metal formed is in...

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  11. Hydrogen bomb is based on the principle of:

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  12. What is the role of depressant in froth flotation process ?

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  13. What is the role of coke in the extraction of iron from its oxides?

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  14. Write two uses of monel metal?

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  15. Describe the various methods employed for the refinining of crude meta...

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  16. An ore of aluminium is

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  17. Give important uses of aluminium.

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  18. What is that special property of monel metal because of which it is us...

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  19. Give examples of steel alloys

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  20. Copper is extracted from copper pyrites by roasting the ore partially ...

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