1. Tardigrade
  2. Question
  3. Chemistry
  4. 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:

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Q. 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:

JEE MainJEE Main 2023General Principles and Processes of Isolation of Elements

Solution:

In Electrolytic refining, the pure metal is used as cathode and impure metal is used as anode.
$Na _3 AlF _6$ is added during electrolysis of $Al _2 O _3$ to lower the melting point and increase conductivity.