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Given below are two statements : one is ...

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as
Reason (R). Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of `Al_(2)O_(3)` 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:

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If the assertion and reason both are false

Text Solution

Verified by Experts

The correct Answer is:
B
In electrolytic reduction of `Al_2 O_3` we use cryolite to increase conductivity and decrease melting point. Cryolite is `Na_3 AlF_6` , Oxidation number of Al is +3.
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