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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 solubility of the impurities in the molten state than in the solid

B

Greater solubility of pure metal than that of impurity

C

Higher melting point of the impurity than that of pure metal

D

Greater noble character of the solid metal than that of the impurity

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A
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CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
  1. Sulphide ore of metal are usually concentrated by froth flotation proc...

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  2. Heating of ore in presence of air to remove sulphur impurities is call...

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

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  4. Which of the following factors is of no significance for roasting sul...

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  5. Complex formation for cyanide method is used for the extraction of

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  6. The least stable oxide at room temperature is

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  7. High purity copper metal is obtained by

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  8. Corumdum is

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  9. Whch ore can be best concentrated by froth flotation process ?

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  10. Which of the following metal is extracted by the use of cyanide soluti...

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  11. When MnO2 is fused with KOH and O2, what is the product formed and its...

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  12. Pb and Sn are extracted from their chief ore respectively by

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  13. The substance not likely to contain CaCO(3) is : (2003)

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  14. Extraction of Ag from commercial lead is possible by

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  15. The chemical composition of slag formed during the smelting process in...

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  16. The metal that cannot obtained by electrolysis of an aqueous solution ...

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  17. Ferric oxide blast furnace is reduced by

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  18. Electric furnaces are lined with magnesia because

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  19. Furances are lined with calcium oxide as

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  20. The economical and high melting point compound used in furance lining ...

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