Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Aluminuim is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite.
Reason (R): The oxidation state of Al in cryolite is +3.
In the light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Aluminuim is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite.
Reason (R): The oxidation state of Al in cryolite is +3.
In the light of the above statements, choose the most appropriate answer from the options given below:
Option 1 -
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Option 2 -
Both (A) and (R) are correct and (R) is the correct explanation of (A)
Option 3 -
(A) is true but (R) is false
Option 4 -
(A) is false but (R) is true.
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1 Answer
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Correct Option - 1
Detailed Solution:In electrolytic reduction of Al2O3, cryolite (Na3AlF6) is used to increase conductivity & decrease melting point. Oxidation state of Al in cryolite (Na3AlF6) is (+3).
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