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What is the principle of zone refining o...

What is the principle of zone refining of metals?

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

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

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

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

Outline the principels of refining of metals by the following methods : (i) Distillation (ii) Zone refining (iii) Electrolysis.

(a) Give an example of zone refining of metals. (b) What is the role of cryolite in the metallurgy of aluminium?

Outline the principples behind the refining of metals by the following methods : (i) Zone refining method (ii)Chormatographaphic method

What is the principle behind the principle of homogeneity of dimensions?

(a) Write the principle of vapour phase refining. (b) Write the role of dilute NaCN in the extraction of silver. (c) What is the role of collectors in the froth floatation process? Give an example of a collector.

The process of zone refining is used for :

ICSE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (SHORT ANSWER QUESTIONS)
  1. What is liquation ?

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  2. Describe briefly Van Arkel method for refining of metals.

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  3. What is the principle of zone refining of metals?

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  4. Carbon monoxide is more effective reducing agent than carbon below 983...

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  5. Which metals are generally extracted by the electrolytic process ? Wha...

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  6. What are the reactions taking place at the two electrodes during elect...

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  7. How is pure alumina prepared from bauxite in Baeyer's process? Give th...

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  8. Write down the chemical formulae of the following ores: Chalcopyrites,...

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  9. Name the principal ore of aluminium.

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  10. Describe the leaching of aluminium ore.

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  11. Explain the basic principles of the following metallurgical operations...

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  12. State briefly the principles which serve as the basis for the followin...

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  13. Write the chemical reactions which take place in the following operati...

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  14. Write the chemical reactions which take place in the following operati...

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  15. Write the chemical reactions which take place in the following operati...

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  16. What chemical principle is involved in choosing a reducing agent for g...

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  17. Describe the role of the following: NaCN in the extraction of silve...

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  18. Describe the role of the following: Cryolite in the extraction of a...

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  19. Give reason : Reduction of Cr(2) O(3) with Al is thermodynamically fea...

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  20. Account for the following facts: (a) The reduction of a metal oxide ...

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