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Name and formula of two magnetic ores....

Name and formula of two magnetic ores.

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`MnO_(2)` (Pyrolusite) and `Fe_(3)O_(4)`(Magnetite)
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AAKASH INSTITUTE ENGLISH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Try Yourself
  1. Define the term flux.

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  2. Discuss the use of an acidic flux in metallurgy.

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  3. Name and formula of two magnetic ores.

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

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

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

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  7. Discuss the process of roasting with suitable example.

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

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

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

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

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

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

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

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

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

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

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

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

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

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