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The following equation depicts a method ...

The following equation depicts a method of purification of nickel by :
`Ni+4COoverset(320K)rarrNi(CO)_4overset(420K)rarrNi+4CO`

A

Zone refining

B

Mond's method

C

Van Arkel method

D

Cupellation

Text Solution

Verified by Experts

The correct Answer is:
B
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II
  1. Van Arkel method of purification of metals involves converting the met...

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  2. Roasting is generally done in case of :

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  3. The following equation depicts a method of purification of nickel by :...

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  4. The smelting of iron in a blast furnace involves all the steps except ...

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  5. Heating of pyrites in air to remove sulphur is called :

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  6. Which of the following is purified by zone refining ?

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  7. In metallurgy , flux is a substance used to convert :

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  8. Which of the following metals is obtained by self reduction process ?

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  9. Thomas slag is :

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  10. In aluminothermic process aluminium acts as :

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  11. Smelting is the process of reduction of metal oxide by :

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  12. Which of the following ores cannot be concentrated by froth floatation...

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  13. Electrolytic reduction method is used for :

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  14. Which of the following contains both Ca and Mg ?

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  15. Which of the following metals does not occur as oxide ?

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  16. Calcinations is carried out in a :

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  17. A metal obtained by hydrometallurgy is :

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  18. Serpeck's process is used for the extraction of :

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  19. Which of the following relations is correct ?

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  20. Copper pyrites , the chief ore of copper , is chemically :

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