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According to Ellingham diagram, the oxid...

According to Ellingham diagram, the oxidation reaction of carbon to carbondioxide may be used to reduce which one of the following oxides at the lowest temperature ?

A

`Al_2O_3`

B

`Cu_2 O`

C

`MgO`

D

`FeO`

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SHARAM PUBLICATION-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-EXERCISE
  1. Identify an alloy containing a non- metal as a constituent in it.

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  2. During electrolyte refining of copper some metals present as impurity ...

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  3. According to Ellingham diagram, the oxidation reaction of carbon to ca...

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  4. Which of the following reaction is an example of calcination process ?

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  5. What is benefaction of ore ?

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  6. Name one important ore and alloy copper.

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  7. How slag is formed in metal extraction ?

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  8. What is mean by pyrometallurgy ?

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  9. Name three alloys of Copper

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  10. The ore that can be concentrated by magnetic separation method, are .....

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  11. What is difference between mineral and ore ?

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  12. Name the deprassant which is used to separate ZnS from PbS ores in fro...

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  13. Name two collectors used in froth floatation process.

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  14. Name one acidic and one basic flux.

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  15. Why do some metals occur in the native state ?

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  16. What is the role of stabilizer in froth floatation process ?

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  17. An ore of galena (PbS) is contaminated with Zinc blende (ZnS). Name on...

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  18. Which types of ores are roasted ?

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  19. Name the method used for the refining of copper metal.

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  20. Why sulphide ores are concentred by froth floatation process.

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