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According to Ellingham diagram the oxida...

According to Ellingham diagram the oxidation reaction of carbon and carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

A

`ZnO`

B

`Al_(2)O_(3)`

C

`CuO`

D

`MgO`

Text Solution

Verified by Experts

The correct Answer is:
B, D
`Al_(2)O_(3)` and `MgO` react with `C` to form respective carbides.
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Multiple Correct)
  1. Salt which is (are) least likely to find in minerals

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  2. The etraction of metals from oxide ores involves

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

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

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

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

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  7. Tempering of steel

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

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

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

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  11. Select the correct statements for Ellingham diagram.

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

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  13. Which of the following pairs consists of ore the same metal ?

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  14. Which of the following metal oxides are reduced by self-reduction meth...

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  15. Disadvantages of using carbon as a reducing agent :

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  16. Select the correct statements :

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  17. Froth flotation process used for the concentration of sulphide ore.

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  18. Which of the following steps are involved in hydrometallurgical proces...

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  19. The reduction of an oxide by aluminium is not called

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  20. For the pyrometallurgical method used for the extraction of copper fro...

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