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Why cannot Al be reduced by carbon ?...

Why cannot `Al` be reduced by carbon ?

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The group containing oxides that cannot be reduced by carbon to give the respective metal is :

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MODERN PUBLICATION-GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS-EXERCISE
  1. What is self-reduction in metallurgy? Give example.

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  2. What is leaching ? Glve an example.

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  3. Why cannot Al be reduced by carbon ?

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  4. What is the role of stabilizer in froth floatation process ?

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  5. It is true that under certain conditions magnesium can reduce SiO(2) ...

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  6. What is the significance of leaching in the extraction of aluminium?

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  7. What is the role of graphite rods in the electrometallurgy of aluminiu...

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

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  9. Explain CaO react with SiO(2) to form a slag ?

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  10. Pine oil is used in forth floatation method . Why ?

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  11. Why sulphide ores are concentred by froth floatation process.

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  12. How is copper extracted from its low grade ore?

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  13. Between CO and C , which is better reducing agent at 983 k

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  14. An ore of galena (PbS) is contaminated with Zinc blende (ZnS). Name on...

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  15. Why is the reduction of a metal oxide easier, if the metal formed is i...

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  16. At a site , low grade copper ores are available and zinc and iron scra...

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  17. Copper can be extracted by hydrometallurgy but not zinc. Explain.

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  18. Name the method used for refining of Nickel metal.

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  19. Which solution is used for the leaching of silver metal in the presenc...

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  20. Out of C and CO, which is a better reducing agent in the lower tempera...

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