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The main function of roasting is :...

The main function of roasting is :

A

to get metal from metal oxide

B

oxidation

C

reduction

D

none of the above

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SHARAM PUBLICATION-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-EXERCISE
  1. The process in which metal oxide is reduced to metal is called

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  2. The most abundant element in the earth's crust (by weight) is :

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  3. The main function of roasting is :

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  4. An ore after levigation is found to have acidic impurities. Which of t...

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  5. When limestone is heated, carbon dioxide is given off. This operation ...

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  6. Delta G^@ - T plot in Ellingham 's diagram slopes are downward for the...

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  7. Which of the following pairs of metals is purified by Van Arkel metho...

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  8. Identify an alloy containing a non- metal as a constituent in it.

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

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

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

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  12. What is benefaction of ore ?

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  13. Name one important ore and alloy copper.

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  14. How slag is formed in metal extraction ?

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  15. What is mean by pyrometallurgy ?

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  16. Name three alloys of Copper

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

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  18. What is difference between mineral and ore ?

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

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  20. Name two collectors used in froth floatation process.

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