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Zone refining is based on the principle ...

Zone refining is based on the principle that___________ .

A

impurities of low boiling metals can be separated by distillation.

B

impurities are more soluble in molten metal than in solid metal.

C

different components of a mixture are differently adsorbed on an adosrbent.

D

vapours of volatile compound can be decomposed in pure metal.

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Which of the following reactions is an example of auto reduction ?

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  2. A number of elements are available in earth’s crust but most abundant ...

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  3. Zone refining is based on the principle that .

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  4. In the extraction of copper from its sulphide ore, the metal is formed...

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  5. During the electrolysis of NaCl solution, the gas liberated at the ano...

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  6. An ore of aluminium is

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  7. Electrolytic refining is used to purify which of the following metals ...

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  8. Extraction of gold and silver involves leaching the metal with CN^- io...

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  9. Answer the question on the basis of figure given below : Choose th...

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  10. Answer the question on the basis of figure given below : Below poi...

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  11. Answer the question on the basis of figure given below : For the r...

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  12. In the following questions two or more options may be correct. At the ...

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  13. In the following questions two or more options may be correct. Which o...

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  14. In the extraction of aluminium by Hall-Heroult process, purified Al2O3...

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  15. Which of the following statements is correct ?

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  16. In the Froth Floatation process, zinc sulphide and lead sulphide can b...

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  17. Common impurities present in bauxite are .

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  18. Which of the following ores are concentrated by froth floation ?

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  19. Which of the following reactions occur during calcination?

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  20. For the metallurgical process of the ores calcined ore can be reduced ...

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