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Zone refining is used for purification o...

Zone refining is used for purification of :

A

Ge

B

Si

C

Ga

D

Se

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The correct Answer is:
A, B, C
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STATEMENT-1 : van Arkel de-Boer method is used for the purification of Ti . STATEMENT-2 : In van Arkel method, Iodine is used. STATEMENT-3 : Zone refining is based on chromatography

MOTION-METALLURGY-EXERCISE 2 (LEVEL - II)
  1. The metal(s) which does/do not form amalgam is/are:

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  2. Auto reduction process is used in extraction of

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  3. Zone refining is used for purification of :

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  4. Which of the following process(es) are used for purification of Bauxit...

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  5. Metals which can be extracted by smelting process are :

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  6. the common impurities present in bauxite are

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  7. Which of the following reduction reactions are actually employed in co...

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  8. Which of the following cannot be obtained by electrolytic reduction of...

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  9. Which of the following ores are concentarted by froth floatation?

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  10. Which of the following statement(s) is/are common between roasting and...

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  11. Which of the following reaction(s) occurs during calcination?

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  12. Roasting can be performed in:

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  13. Which of the following is(are) sulphide ores?

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  14. Which of the following is(are) regarded as iron ores?

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  15. Which of the following employ downward movement or ore due to gravity?

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  16. Calcium silicate slag formed in extraction of iron

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  17. Amphoteric nature of aluminium is employed in which of the following p...

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  18. Noble metal(s) which are commerically extracted by cyanide process is(...

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  19. Carbon reduction method is commercially employed for commercial extrac...

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  20. The main reaction occuring in blast furnace during the extraction of i...

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