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Which of the following options are corre...

Which of the following options are correct?

A

Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast

B

In extraction of silver is extracted as cationic complex

C

Nickel is purified by zone refining

D

`Zr` and `Ti` ate purified by van Arkel method

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ALLEN-METALLURGY-EXERCISE -04
  1. For the reduction of FeO at the temperature corresponding to point D, ...

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  2. At the temperature corresponding to which of the points in Fig. FeO wi...

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  3. Which of the following options are correct?

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  4. In the extraction of aluminium by Hall-Heroult process purified AI(2)O...

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  5. Which of the following statements is correct about the role of substan...

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  6. In the Froth Floatation process, zinc sulphide and lead sulphide can b...

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  7. Common impurities present in bauxite are

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  8. Which of the following ores are concentrated by froth floatation?

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  9. Which of the following reactions occurs during calcination ?

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  10. For the metallurgical process of which of the ores calcined ore can be...

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  11. The main reaction occuring in blast furnace during the extraction of i...

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  12. In which of the following method of purification metal is converted to...

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  13. Which of the following statements are correct?

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  14. In the extraction of chlorine from brine

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  15. Why is an external emf of more than 2.2V required for the extraction o...

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  16. At temperature above 1073K coke can be used to reduce FeO to Fe. How c...

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  17. Wrought iron is the purest form of iron. Write a reation used for the ...

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  18. How is copper extracted from low grade copper ores?

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  19. Write two basic requirements for refining of a metal by Mond process a...

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  20. Although carbon and hydrogen are better reducing agents but they are n...

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