The ore from which aluminium is extracted must first be treated with ________ so that pure Aluminium oxide can be obtained.

Coke

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Froth floatation

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Sodium hydroxide

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Zinc blende

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Solution

The correct option is C Sodium hydroxide
The ore from which aluminium is extracted must first be treated with NaOH so that pure Aluminium oxide can be obtained.

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Similar questions

(a) A to F below relate to the source and extraction of either zinc or aluminium:

A.Bauxite, B.Coke,

C. Cryolite D.Froth floatation, E.Sodium hydroxide solution, F.Zinc blende.

(i) Write down the three letters each from the above list which are relevant to:

1.Zinc, 2.Aluminium.

(ii) Fill in the blanks using the most appropriate words form A to F.

1.The ore from which aluminium is extracted must first be treated with ...................so that pure aluminium oxide can be obtained.

2.Pure aluminium oxide is dissolved in .............. to make a conducting solution.
(iii) Write the formula of cryolite.

Q. A to F below relate to the source and extraction of either zinc or aluminium.
A. bauxite
B. coke
C. cryolite
D. froth flotation
E. sodium hydroxide solution
F. zinc blende.
(a) Write down the three letters each from the above list which are relevant to:
(i) zinc
(ii) aluminium
(b) Fill in the blanks using the most appropriate words from A to F:
(i) The ore from which aluminium is extracted must first be treated with _________ so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in _________ to make a conducting solution.
(c) Write the formula of cryolite.

Aluminium is obtained by the electrolysis of molten aluminium oxide. A metal just below aluminium in the reactivity series can be extracted by which method easily:

Q. (a) Name the ore from which aluminium is extracted.
(b) How is ore purified (give equations also)?
(c) How is aluminium obtained from pure ore?
(d) Which method of refining is used to get 99.8% pure aluminium?

Q. 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'.
(a) Which solution is used to react with bauxite as a first step in obtaining pure aluminium oxide?
(b) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the balanced chemical equation for this reaction.
(c) Name the element which serves both as anode and the cathode in the extraction of aluminium.
(d) Write the balanced chemical equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
(e) Give the balanced chemical equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.

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The ore from which aluminium is extracted must first be treated with ________ so that pure Aluminium oxide can be obtained.

The correct option is C Sodium hydroxideThe ore from which aluminium is extracted must first be treated with NaOH so that pure Aluminium oxide can be obtained.

The correct option is C Sodium hydroxide
The ore from which aluminium is extracted must first be treated with NaOH so that pure Aluminium oxide can be obtained.