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Highly electropositive metals can not he...

Highly electropositive metals can not he extracted by carbon reduction process because these

A

Metals combine with carbon to form carbides

B

Metal oxides are reduced by carbon

C

Metal oxides are not reduced by carbon

D

Loss of metal is more by vaporisation

Text Solution

Verified by Experts

The correct Answer is:
A, D
Highly BP metal compounds are not easily reduced by coke and the metal formed combines with carbon forms metal carbides. And loss of metal is mroe by vapourisation
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AAKASH SERIES-METALLURGY-LEVEL-II (LECTRURE SHEET) (EXERCISE-I)
  1. of the following reduction process, correct processes are:

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  2. Roasting of copper pyrites is done

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  3. Highly electropositive metals can not he extracted by carbon reduction...

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  4. Which one of the following metals can be extracted by aluminothermit p...

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  5. For which of the following metal the carbon reduction cannot be used ?

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  6. The advantages of using carbon to reduce a number of oxides and other ...

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  7. The disadvantages of carbon reduction method are:

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  8. The chemical treatment of the ore for concentration is done in the cas...

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  9. What are the froth stabilizers in forth floatation process

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  10. Froth flotation

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  11. The function of adding cryolite in the clectrolytic reduction of alumi...

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  12. Electrolysis method is used for the extraction of

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  13. Which of the following equation reprsents smelting process

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  14. In the extraction of which of the following metals is used for amalgam...

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  15. The flux that can be used for the removal of hasic impurities like Cou...

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  16. Chemical reduction is used in the extraction of

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  17. Bessemerisation is used in the metallurgy of

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  18. Electro-metallurgical process (electrolysis of fused electrolyte) is e...

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  19. Electrolytic reduction is used in the extraction of

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  20. Carbon is used as a common reducing agent in the extraction of

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