Home
Class 12
CHEMISTRY
In the context of the Hall-Heroult proce...

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

A

`Al^(3+)` is reduced at the cathode to form Al.

B

`Na_3AlF_6` serves as the electrolyte.

C

CO and `CO_2` are produced in this process

D

`Al_2O_3` is mixed with `CaF_2` which lowers the melting point of the mixture and brings conductivity .

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|303 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise EXERCISE|529 Videos

  • HALOALKANES AND HALOARENES

    MODERN PUBLICATION|Exercise EXERCISE|978 Videos

Similar Questions

Explore conceptually related problems

which among the following statement is false ?

Which one of the following statements is false?

Which of the following statement is false for fuel cell?

Which of the false statements?

From the Ellingham graphs on carbon, which of the following statements is false ?

In context of the lanthanoids, which of the following statement is not correct ?

Which of the following statements is false regarding predator?

Which of the following statements regarding food chain is false?

Which of the following statement regarding lanthanides is false?

MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. In view of the sign of Deltar G^@ for the following reactions : PbO2 +...

    Text Solution

    |

  2. State whether the statement is true or false- Baking powder is used to...

    Text Solution

    |

  3. In the context of the Hall-Heroult process for the extraction of Al, ...

    Text Solution

    |

  4. Which one of the following ore is best concentrated by froth floatatio...

    Text Solution

    |

  5. Delta G^@ vs T plot in the Ellingham's diagram slopes downward for the...

    Text Solution

    |

  6. Identify the reaction that does not take place in a blast furnace :

    Text Solution

    |

  7. If C and D are two events such that CsubD""a n d""P(D)!=0 , then the c...

    Text Solution

    |

  8. In aluminothermic process, Al is used as

    Text Solution

    |

  9. State the role of silica in the metallurgy of copper.

    Text Solution

    |

  10. In the electrolytic refining of zinc, ............

    Text Solution

    |

  11. According to Ellingham diagram, the oxidation reaction of carbon to c...

    Text Solution

    |

  12. formula of copper sulphate

    Text Solution

    |

  13. From the Ellingham graphs on carbon, which of the following statements...

    Text Solution

    |

  14. The function of potassium ethyl xanthate in froth floatation process i...

    Text Solution

    |

  15. Magnetic separation is used in the concentration of: Copper pyrites, C...

    Text Solution

    |

  16. When limestone is heated, CO2 is given off. The metallurgical operatio...

    Text Solution

    |

  17. The statement that is not correct is

    Text Solution

    |

  18. Match the metal in Column I with the ores in Column II

    Text Solution

    |

  19. Match the extraction process in Column I with the metal in Column II.

    Text Solution

    |

  20. Match the species given in Column I that are present in the ore(s) giv...

    Text Solution

    |