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- Engineering
- How to solve this problem- Aluminium is extracted by the electrolysis of
- #Joint Entrance Examination Main
- #General Principle and process of Isolation of metals
- #Engineering
- #Chemistry
Aluminium is extracted by the electrolysis of
- Option 1)
bauxite
- Option 2)
alumina
- Option 3)
alumina mixed with molten cryolite
- Option 4)
molten cryolite
Answers (1)
As we learnt in
Electrolytic Refining -
Many of the metals such as Cu,Au,Ag,Al,Hb etc are purified by this method.
- wherein
The impure metal is made anode while a thin sheet of pure metal acts as a cathode.
Bauxite is first purified into alumina which is dissolved in molten cryolite to lower energy costs and then extraction is done by electrolysis.
Option 1)
bauxite
This option is incorrect.
Option 2)
alumina
This option is incorrect.
Option 3)
alumina mixed with molten cryolite
This option is correct.
Option 4)
molten cryolite
This option is incorrect.
View full answer
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