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How can you separate alumina from silica...

How can you separate alumina from silica in a bauxite ore associated with silica? Give equations, if any.

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CENGAGE CHEMISTRY ENGLISH-APPENDIX INORGANIC VOLUME 2-Exercises
  1. What criterion is followed for the selection of the stationary phase i...

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  2. Describe a method for refining nickel.

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  3. How can you separate alumina from silica in a bauxite ore associated w...

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  4. Giving examples, differentiate between ‘roasting’ and ‘calcination’.

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  5. How is cast iron different from pig iron ?

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

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

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

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  9. What is the process of leaching in case of low grade copper ores ?

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

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  11. The value ofDelta (f) G^(Ө) for formation of Cr(2) O(3) is – 540 kJmo...

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

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

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

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

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  16. Outline the principles of refining of metals by the following methods:...

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

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  18. Discuss the general characteristics of Group 15 elements with referenc...

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  19. Why does the reactivity of nitrogen differ from phosphorus?

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  20. Discuss the trends in chemical reactivity of group 15 elements.

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