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In general which metals do you expect.to...

In general which metals do you expect.to occur in the native state in nature? Give examples

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Those below hydrogen in the electrochemical series e.g. Cu.A g, A u, P t
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. Cinnabar (HgS) and galena (PbS) on roasting. often given their respect...

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  2. Although thermodynamically feasible,in practice, magnesium metal is no...

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  3. In general which metals do you expect.to occur in the native state in ...

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  4. Why is it advantageous to roast a sulphide ore before reduction?

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  5. A, white powder (A) whén heated gave off a coloúrless gas (B) which tu...

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  6. Describe the priniciple of extraction of each of the following i)Sn fr...

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  7. Give one important ore of aluminium?

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  8. Name the four, most abundant elements in the earth's crust? Arrange.th...

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  9. Copper and silver lie below in the electrochemical series and yet they...

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  10. Name,the method used for refining of (i) Nićkel (ii) Zireonium

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  11. A sample of galena (PbS) is contaminated with zinc blende (ZnS). Name ...

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  12. Metal sulphides occur mainly in rocksand metal halides in lakes and se...

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  13. Prudict the mode of occurrence of the following metals. (i) Highly rea...

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  14. Which of the following ores can be concentrated by magnetic separation...

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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. What is Ellingham diagram?

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  17. Name the constituents of the following-alloys? (i) Bronze,ii)stainless...

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  18. Name the electrolytic process used for the extraction of aluminium? Wh...

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  19. Give the different steps involved in metallurgy

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  20. Prudict the mode of occurrence of the following metals. (i) Highly rea...

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