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Extraction of aluminium form alumina is ...

Extraction of aluminium form alumina is done by _____.

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Electrometallurgy
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Extraction OF Aluminium (Al)

Write the role of : (i) NaCn in the extraction of gold from its ore. (ii) Cryolite in the extraction of aluminium from pure alumina. (iii) Co in the purification of Nickel.

Describe the role of (i) NaCN in the extraction of gold from its ore. (ii) Cryolite in the extraction of aluminium from pure alumina (iii) CO in the purification of Nickel.

Write the role of (II)Cryolite in the extraction of aluminium from pure alumina.

Describe the role of the following : (i) NaCN in the extraction of silver ore. (ii) Cryolite in the extraction of aluminium from pure alumina.

CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Fill In The Blanks)
  1. Froth flotation process is generally employed for ores.

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  2. The most abundant metal in earth's crust is .

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  3. Extraction of aluminium form alumina is done by .

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  4. The metal like Si, Ga etc., which are used in semiconductors, are puri...

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  5. The purification of crude metals is referred to .

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  6. Magnesite is an ore of .

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  7. The metal present in chlorophyll is

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  8. The process of reduction of oxides by aluminium is known as .

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  9. The process of removal of gangue form ore is known as .

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  10. Aluminium is obtained from Al(2)O(3) by reduction.

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  11. In the metallurgical process for the electro-refining of the metal, th...

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  12. Roasting is generally carried out in mineral.

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  13. Gold is usually found nearmineral.

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  14. Metal extracted from sea water is .

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  15. The naturally occurring chemical substances in form of which occur in ...

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  16. The earthly and siliceous impurities which generallty occur with ores...

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  17. Highly reactive elements occurs in nature instate.

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  18. Minerals from which metals are extracted conveniently and economically...

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  19. The complete of extracting the metal form its ores is called .

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  20. Calcination is the process of heating the ore strongly in the of air.

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