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State the role of silica in the metallur...

State the role of silica in the metallurgy of copper.

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NCERT TELUGU-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Exercises
  1. Write down the chemical reactions taking place in different zones in t...

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  2. Write down the chemical reactions taking place in the extraction of zi...

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

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  4. What is meant by the term “chromatography”?

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  5. What criterion is followed for the selection of the stationary phase i...

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  6. Decribe a method for the refining of nickel.

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  7. How is alumina separated from silica in the bauxite ore associated wit...

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  8. Explain roasting and calcination.

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  9. How is cast iron different from pig iron?

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  10. Differentiate between “minerals” and “ores”.

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  11. Why copper matte is put in silica lined converter?

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

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

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  14. Why is zinc not extracted from zinc oxide through reduction using CO?

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  15. The value of DeltafG^(Theta) for formation of Cr2 O3 is – 540 kJ "mo...

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  16. Out of C and CO, which is a better reducing agent for ZnO ?

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  17. The choice of a reducing agent in a particular case depends on thermod...

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  18. Name the processes from which chlorine is obtained as a by-product. Wh...

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  19. What is the role of graphite rod in the electromellurgy of aluminium?

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  20. Outline the principles of refining of metals by the following methods....

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