question_answer

In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false? [JEE Main Solved Paper-2015 ]

A) \[A{{l}^{3+}}\] is reduced at the cathode to form Al

B) \[N{{a}_{3}}Al{{F}_{6}}\] serves as the electrolyte

C) \[CO\] and \[C{{O}_{2}}\] are produced in this process

D) \[A{{l}_{2}}{{O}_{3}}\]is mixed with \[Ca{{F}_{2}}\] which lowers the melting point of the mixture and brings conductivity