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Which types of ores are purified by hydr...

Which types of ores are purified by hydraulic washing ? Give two examples also.

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Heavy ores like `Fe_(2)O_(3)`. Haematitie, `CuCO_(3)*Cu(OH)_(2)` Malachite.
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AAKASH INSTITUTE ENGLISH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Try Yourself
  1. Discuss the use of an acidic flux in metallurgy.

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  2. Name and formula of two magnetic ores.

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  3. Which types of ores are purified by hydraulic washing ? Give two examp...

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  4. Which of the following is used as collector in froth floatation proces...

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  5. Sulphdies ores are converted to oxides before reduction . This is expl...

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  6. Discuss the process of roasting with suitable example.

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  7. During roasting the temperature should be kept below its m.p. Why ?

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  8. What type of the reduction method does the following reaction show (Be...

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  9. Which reducing agent is commonly employed for reduction of (a) ZnO "...

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  10. In some cases, Ellingham diagrams (graphs) show a bend. What do you re...

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  11. On Ellingham diagrams if two graphs intersect each other, what does th...

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  12. Name the four main zones of blast furnace in the extraction of Fe from...

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  13. Write the complete set of reactions occuring in the zone of reduction ...

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  14. Coke can be used to reduce Cu(2)O. Explain it based on thermodynamic v...

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  15. What the impure copper collected from Bessemer converter commonly call...

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  16. Name and formulate themain ore from which zinc is extracted.

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  17. What is the impure form of zinc commonly known as ?

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  18. Name and formulate the reagent used for the leaching of argentite.

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  19. What is the hydrometallurgy of silver or gold commonly known as ?

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  20. Write the equation of the net reaction taking place in Hall Heroult el...

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