JEE Main 202131 AugustMorning Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 31 August
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Alcohols Phenols and Ethers
JEE Main 2021 · 31 August · Morning Shift · Chemistry · Alcohols Phenols and Ethers
Given below are two statements : one is labelled as Assertion (A)...
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 with cryolite.
Reason (R) : The oxidation state of in cryolite is
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of with cryolite.
Reason (R) : The oxidation state of in cryolite is
In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A).
- B(A) is true but (R) is false.
- CBoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- D(A) is false but (R) is true.
Correct answer
C. Both (A) and (R) are correct but (R) is not the correct explanation of (A).
Step-by-step solution
In electrolytic reduction of we use cryolite to increase conductivity and decrease melting point. Cryolyte is Oxidation number of is