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Carbon reduction process is not commerci...

Carbon reduction process is not commercially applicable for which of the following set to oxides to extract the respective metal ?
(I) `ZnO`
(II) `Fe_(2)O_(3)`
(III) `Al_(2)O_(3)`
(IV) `SnO_(2)`
(V) `MgO`.

A

`ZnO,Fe_(2)O_(3),SnO_(2)`

B

`ZnO,SnO,MgO`

C

`MgO,Al_(2)O_(3)`

D

`MgO,SnO,Al_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
`MgO + C overset("At high temp.") underset(2000^@ C)rarr Mg + CO`.
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
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  2. The process of isolation of metals by dissolving the ore in a suitable...

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  3. Complex formed in the following methods are (I) Mond's process for p...

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  4. Casseterite ore consists of magnetic impurity named as

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  5. Find the formula of A ZnS + O(2) rarr (A) + SO(2).

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  6. Four metals and their methods of refinement are given (i) Ni,Cu,Zr,G...

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  7. Which of the following statement is correct regarding Cu extraction ?

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  8. Which of the following process is not involved in the extraction of Fe...

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  9. Carbon reduction process is not commercially applicable for which of t...

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  10. Which of the following metal can be reduced by carbon reduction as wel...

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  11. Which of the following faction is of no significance for roasting sul...

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  12. The method not used in metallurgy to refine impure metal is :

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  13. Chalcogens are

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  14. The oxidation states of Cu and Fe in chalcopyrite are, respectively,

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  15. Thermite reduction is not used for commercial extraction of the respec...

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  16. Which of the following is incorrect on the basic of the above Ellingha...

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  17. Copper can be extracted by hydrometallurgy but not zinc because

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  18. Which of the following statement is correct ?

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  19. Consider the following metallurgical processes : (1) Heating impure ...

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  20. Consider the following statements . Roasting is carried out to : (i...

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