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The process of the removal of impurities...

The process of the removal of impurities from a crude metal is called…….

A

Concentration

B

Calcination

C

Refining

D

Roasting

Text Solution

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The correct Answer is:
C
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FULL MARKS-METALLURGY -Additional questions ( CHOOSE THE BEST ANSWER )
  1. In the froth floatation process for the purification of ores the parti...

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  2. In a metallurgical process ,an acid flux is used for removing…..

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  3. The process of the removal of impurities from a crude metal is called…...

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  4. Which of the following metal is obtained by self reduction method?

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  5. Which one of the following ore is best concentrated by froth floatatio...

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  6. Heating mixture of Cu(2)O and Cu(2)S will give……..

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  7. Which of the following pairs of metals is puridied by Van-Arkel method...

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  8. Aluminium is extracted from alumina (Al(2)O(3)) by electrolysis of a m...

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  9. The ore which contains both copper and iron….

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  10. Match the etraction processes listed in column-I with metals listed in...

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  11. The chief ore of Aluminium is

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  12. Which one of the following metal having least chemical reactive?

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  13. Pick out the more reactive metal

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  14. Consider the following statements. (i)All ores ar minerals but all m...

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  15. Match the List-I and List-II correctly using the code given below.

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  16. The impurities associated with ores is……

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  17. Oxide ores are concentrated by………

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  18. Heaematite and tin stone are purified by …………

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  19. Froth flotation process is suitable for concentrating …………… ores.

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  20. Copper pyrite and zinc blende are purified by……..

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