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The method of zone refining of metals is...

The method of zone refining of metals is based on the principle of :

A

greater mobility of the pure metal than that of the impurity

B

higher melting point of the impurity than that of the pure metal

C

greater noble character of solid metal than that of the impurity

D

greater solubility of the impurity in the molten state than in the solid

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The correct Answer is:
D
is the correct answer.
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice
  1. Which of the following is not an ore of iron ?

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  2. Which of the following processes is used in the extractive metallurgy ...

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  3. The method of zone refining of metals is based on the principle of :

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  4. Pb and Sn are extracted from their chief ore by :

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  5. Which of the following is not an ore of magnesium ?

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  6. Extraction of zinc from zinc blende is achieved by

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  7. Which of the following statements about the advantage of roasting of s...

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  8. Sulphide ores of the metals are usually concentrated by froth floatati...

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  9. Which of the following is not an ore of aluminium ?

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  10. Which of the following factors is of no significance for roasting sulp...

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  11. When compared to DeltaG^(@) for the formation of Al(2)O(3), DeltaG^(@)...

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  12. Native silver metal forms a water soluble complex with a dilute soluti...

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  13. Which method of purification is represented by the following equations...

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

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  15. Which one of the following is a mineral of iron ?

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  16. In the cyanide extraction process of silver from argentite ore, the ox...

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  17. Sulphide ores are common for the metals

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  18. The metallic lustre of metals is due to :

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  19. The process of zone refining is used in the purification of :

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  20. Which is an oxide ore ?

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