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Outline the principles of refining of me...

Outline the principles of refining of metals by the following methods :
(a) Electrolytic refining
(b) Zone refining
( c) Vapour phase refining.

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CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Exercises
  1. The choice of a reducing agent in a particular case depends on thermod...

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

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

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

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

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

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  7. Why does NH3 form hydrogen bond but PH3 does not?

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  8. How is nitrogen prepared in the laboratory? Write the chemical equatio...

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  9. How is ammonia manufactured industrially?

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  10. Illustrate how copper metal can give different product on reaction wit...

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  11. Give the resonating structures of NO2 and N2O5.

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  12. The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?

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  13. Why does R3P=0 exist but R3N=0 does not (R= alkyl group)?

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  14. Explain why NH(3) is basic while BiH(3) is only feebly basic ?

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  15. Nitrogen exists as diatomic molecule and phosphorus as P4. Why?

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  16. Write main differences between the properties of white phospghorus and...

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  17. Why does nitrogen show catenation properties less than prosphorus.

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  18. Give the disproportionation reaction of H3PO3.

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  19. Can PCl5 act as an oxidising as well as a reducing agent? Justify.

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  20. Justify the placement of O,S,Se,Te and Po in the same group of the per...

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