In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false-

In the context of the Hall-Heroult process for the extraction of Al, which of the following statement is false?

In the context of the Hall - Heroult process for the extraction of Al, which of the following statement is false ?

In the correct of the Hall-Heroult process for the extraction of Al , which of the following statements is false ?

In the Hall-Heroult process for the extraction of Al , which of the following statements is false ?

In the correct of the Hall-Heroult process for the extraction of Al , which of the following statements is false ?

In the centext of the hall-heroul process for the extraction of AI , which of the following statement is false?

Hall Heroult method is used for the extraction of