Given below are two statements:\ Statement I: During electrolytic refining, the pure metal is made

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 $Al_2O_3$ is mixed with $Na_3AIF_6$ to lower the melting point of the mixture.

Professor PC Thomas Classes · Answer

Statement I is incorrect because, in electrolytic refining, the *impure* metal is the anode and the *pure* metal is the cathode. Statement II is a correct fact about the Hall-Heroult process.