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Aluminium oxide is not reduced by chemic...

Aluminium oxide is not reduced by chemical reactions due to

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Give appropriate scientific reason for the statement : Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by a reducing agent.

Give appropriate scientific reasons for the following statements: Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by a reducing agent.

How electrolysis can be used in extraction of aluminium? Why aluminium cannot be reduced by conventional reducing agents ?

The following questions are relevant to the extraction of Aluminium: Give a balanced chemical equation for the above reaction

Aluminium is used as a reducing agent in the reduction of :

Aluminium oxide is following type of an oxide.

In the course of a chemical reaction an oxidant -

Answer the following question related with the isolation of aluminium from bauxite: The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the equation for this reaction.

The following is an extract from 'Metals in the Service of Man, Alexander and Street/Pelican 1976. 'Alumina (aluminium oxide) has a very high melting point of over 2000^@ C so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance : The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the equation for this reaction.

How are oxides classified? Describe each type of oxide with the help of chemical reactions.

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Fill In The Blanks)
  1. Magnesite is an ore of .

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  2. The metal present in chlorophyll is

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  3. Aluminium oxide is not reduced by chemical reactions due to

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

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

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

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  7. Roasting is generally carried out in mineral.

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  8. Gold is usually found nearmineral.

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  9. The metal that is extracted from sea water is

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

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

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  12. Highly reactive elements occurs in nature instate.

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

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

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

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  16. An ore of tin containing , FeCrO(4) is concentrated by

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  17. Sodium cyanide solution is used to extract or from its ores.

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  18. ores are concentrated by froth flotation and roasted in excess of air ...

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  19. involves treating the powdered ore with a suitable reagent which selec...

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  20. Flux combines the infusible impurities to form.

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