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Explain the role of the following in the...

Explain the role of the following in the processes mentioned: Cryolite in the metallurgy of aluminium.

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ASSAM ACADEMIC CENTRE-General Principles of Processes of Isolation of Elements-Example
  1. Differentiate between 'minerals' and 'ores'.

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  2. Why Copper matte is put in Silica lined converter?

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  3. Explain the role of the following in the processes mentioned: Cryolite...

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  4. How is leaching carried out in case of low grade copper ores?

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  5. Why Zinc not extracted from Zinc oxide through reduction using CO?

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

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  7. Name the processes from which Chlorine is obtained as a by product.

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  8. What is the role of graphite rod in the electrometallurgy of aluminium...

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

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  10. Predict conditions under which Al might be expected to reduce MgO.

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

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

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  13. Name two metals which occur in nature as oxides.

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  14. Why is froth floatation process selected for the concentration of sulp...

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

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  16. Give reasons for the following. Alumina is dissolved in cryolite for e...

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  17. Why Zinc oxide can be reduced to the metal by heating with Carbon andn...

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

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  19. Describe the role of the following in the processes mentioned: NaCN in...

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  20. Which is the most abundant element in the universe?

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