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Explain Zone refining....

Explain Zone refining.

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Refining is

Explain the following : Zone refining

What is Zone refining ? Describe the principle involved in the purification of the metal by this method.

(A): High purity gallium for semiconducting purpose can be obtained by zone refining (R): Zone refining works on the principle of fractional crystallisation, leading to high purity

Write note on zone refining .

Outline the principles of refining of metals by the following methods. (a)Zone refining (b) Electrolytic refining (c) poling (d) Vapour phase refining.

Explain purification or refining of crude metal.

In zone - Refining method the molten zone :

The process of zone refining is used for

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  7. Explain Zone refining.

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  11. Outline the principles of refining of metals by the following methods....

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  12. Outline the principles of refining of metals by the following methods....

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  13. Outline the principles of refining of metals by the following methods....

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  14. Outline the principles of refining of metals by the following methods....

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  15. Which of the following reagent is used in the extraction of Aluminium ...

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  16. Explain the extraction of Zinc form Zinc blende.

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  17. Write any two ores with formulae of the following metal : Aluminium

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  18. Write any two ores with formulae of the following metal : Zinc

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  19. Write the names and formulae of any two ores of iron

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  20. Write any two ores with formulae of the following metal : Copper

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