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Which of the following oxides cannot be ...

Which of the following oxides cannot be reduced by auto or self reduction ?

A

`HgO`

B

`Cu_(2)O`

C

`PbO`

D

`Al_(2)O_(3)`

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AAKASH INSTITUTE ENGLISH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
  1. Serpeck's method involves the heating of bauxite with

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  2. Sulphide ore is converted to oxide form by using the process

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  3. Which of the following oxides cannot be reduced by auto or self reduct...

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  4. Which of the following is used as reducing agent in Gold schmidt metho...

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  5. Which of the following is used to reduce TiCl(4) to Ti ?

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  6. At 1250 K 2FeO(s)to2Fe(s)+O(2)(g), DeltaG=+320kJmol^(-1) of O(2) 2...

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  7. Ellingham diagrams are plots of DeltaG(1)^(@) Vs T for the formation o...

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

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  9. In Ellingham diagrams of Delta(1)G oxide formation Vs T, which of the ...

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

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  11. Which of the following is incorrect w.r.t. metallurgy of iron in the b...

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  12. Which of the following has the lowest percentage of carbon in it?

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  13. Which furnace is used for the extraction of iron from haematite ?

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  14. Roasting of sulphide ore is generally performed in

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  15. The final stage of self reduction for the extraction of Cu is carried ...

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  16. Zinc is extracted from zinc oxide by its reaction with coke in

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

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  18. Hall Heroult method is used for the extraction of

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  19. During the collection of Al by Hall Heroult method, how much of graphi...

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  20. boiling process is used for:

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