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During the process of polling , ....

During the process of polling , _________.

A

metal carbonates are reduced to metals

B

metal nitrates are reduced to metals

C

metal sulphates are reduced to metals

D

metal oxides are reduced to metals

Text Solution

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The correct Answer is:
D
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TARGET PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Critical Thinking
  1. Which of the following statements is INCORRECT on the basis of Ellingh...

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  2. Liquation process for refining of crude metal is used when .

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  3. During the process of polling , .

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  4. The fact that impurities are more soluble in the molten state than in ...

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  5. Inert atmosphere of argon is used during ozone refining to prevent.

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  6. Gallium arsenide is purified by .

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  7. Which of the following impurities are removed in van Arkel method ?

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  8. Which method of purification is represented by following equations ? ...

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  9. During roasting of concentrated zinc sulphide ore, which of the follow...

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  10. Roasting of concentrated zinc sulphide ore is completed at the tempera...

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  11. Which of the following is INCORRECT regarding modern vertical retort p...

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  12. Iron exhibits property of ferromagnetism.

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  13. In metallurgy if iron, charge introduced in the blast furnace consists...

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  14. In the cup and cone arrangement of blast furnace, the cone enables .

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  15. In the metallurgy of iron, when limestone is added to the blast furnac...

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  16. The smelting of iron in the blast furnace involves all the following p...

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  17. Which of the following reactions does NOT occur in blast furnace ?

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  18. Which of the following is NOT a mineral of aluminium ?

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  19. Baeyer's process is used for the purification of bauxite containing as...

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  20. The chief impurity present in bauxite is

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