Question

Given below are two statements:
Statement I : During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode
Statement II : During the Hall-Heroult electrolysis process, purified $Al _2 O _3$ is mixed with $Na _3 AlF _6$ to lower the melting point of the mixture
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Answer 1

Answer: (D)

Statement I is incorrect but Statement II is correct

Answer 2

The correct answer is (D) : Statement I is incorrect but Statement II is correct
In Electrolytic refining, the pure metal is used as cathode and impure metal is used as anode.
Na3​AlF6​ is added during electrolysis of Al2​O3​ to lower the melting point and increase conductivity.