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Which of the following are correct proce...

Which of the following are correct processes ?

A

`Fe + Al_(2) O_(3) rarr 2Al + Fe_(2) O_(3)`

B

`ZnO + C rarr Zn + CO`

C

`Cr_(2)O_(3) + 2 Al rarr 2Cr + Al_(2) O_(3)`

D

`2[Ag(CN)_(2)]^(Ө) + Zn rarr 2Ag +[Zn(CN)_(4)]^(2-)`.

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The correct Answer is:
B, C, D
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Multiple Correct)
  1. Metallury involves steps :

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  2. Which of the following ore is/are oxide ore (s) ?

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  3. Which of the following are correct processes ?

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  4. Which of the following are correctly matched ?

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  5. Auto-reduction process is used for the extraction of :

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  6. Which of the following reactions occurs during calcination ?

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  7. Leaching can be used for extraction of

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  8. MgO can be used as a refractory material because

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  9. Salt which is (are) least likely to find in minerals

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  10. The etraction of metals from oxide ores involves

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  11. According to Ellingham diagram the oxidation reaction of carbon and ca...

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  12. Which of the following statements are correct regarding metallurgy of ...

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  13. The major role of flourspar, CaF(2) which is added in small amount in ...

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  14. Which is correct process-mineral group in metallurgical extraction ?

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  15. Tempering of steel

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  16. Out of the following reduction processes : (i) Fe(2)O(3) + 3C rarr 2...

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  17. Out of the following matals that cannot be obtained by electrolysis of...

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  18. Silver containing lead as an impurity is not purified by

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  19. Select the correct statements for Ellingham diagram.

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  20. Which of the following statements is/are correct ?

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