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Which of the following metal oxides are ...

Which of the following metal oxides are reduced by self-reduction method ?

A

HgO

B

`Cu_2O`

C

PbO

D

`Al_2O_3`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Assignment (Section-A) Objective type Question
  1. Serpeck's method involves the heating of bauxite with

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  2. A sulphide ore is converted into metal oxide by the process of:

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  3. Which of the following metal oxides are reduced by self-reduction meth...

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  4. Which of the following is used as reducing agent in Goldschmidt method...

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  5. Which of the following is used to reduce TiCl4 to Ti?

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  6. In Ellingham diagrams plots of Delta(f)G (oxide formation) show positi...

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  7. Which of the following statement is correct w.r.t. the following graph...

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  8. In Elingham diagrams of DeltaG de formation Vs T, which of the followi...

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  9. The form of iron obtained from blast furnace is:

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  10. Which of the following has lowest percentage of carbon?

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  11. Why partial roasting of sulphide ore is done in the metallurgy of copp...

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  12. Zinc is extracted from zinc blende by

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  13. Which of the following metal is leached by Cyanide process

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  14. Hall-Heroult method is used during extraction of :-

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  15. Poling is used for the purification of:

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  16. Impure zinc, as collected from earthen clay retort, is called

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  17. The process of converting hydrated alumina into anhydrous alumina is c...

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  18. Extraction of zinc from zinc blende

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  19. Which of the following metal is purified by distilation process?

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  20. Vapour phase refining can be carried out in case of

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