Home
Class 12
CHEMISTRY
Which of the following statements is/are...

Which of the following statements is/are correct

A

The chemical processes in the production of steel from haematite ore involve reduction followed by oxidation.

B

Lead is extracted from its chief ore galena by both carbon reduction as well as self-reduction.

C

In Hall-Heroult process, the electrolyte used is a molten mixture of alumina and cryolite or fluorspar.

D

Haematite, cassiterite and argentite are oxide ores.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise (Single Correcttype)|106 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise (Assertion-Reasoning)|18 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Linked Comprehension)|42 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archieves Subjective|35 Videos

  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Archives (Linked Comprehension)|1 Videos

Similar Questions

Explore conceptually related problems

Which of the following statement is/are correct?

Which of the following statement is/are correct ?

Which of the following statement is/are correct?

Which of the following statement is/are correct?

Which of the following statement is/are correct ?

Which of the following statement is/are correct?

Which of the following statement is/are correct :

Which of the following statement is/are correct

Which of the following statement is/are correct?

Which of the following statement is/are correct?

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Multiple Correct)
  1. Silver containing lead as an impurity is not purified by

    Text Solution

    |

  2. Select the correct statements for Ellingham diagram.

    Text Solution

    |

  3. Which of the following statements is/are correct

    Text Solution

    |

  4. Which of the following pairs consists of ore the same metal ?

    Text Solution

    |

  5. Which of the following metal oxides are reduced by self-reduction meth...

    Text Solution

    |

  6. Disadvantages of using carbon as a reducing agent :

    Text Solution

    |

  7. Select the correct statements :

    Text Solution

    |

  8. Froth flotation process used for the concentration of sulphide ore.

    Text Solution

    |

  9. Which of the following steps are involved in hydrometallurgical proces...

    Text Solution

    |

  10. The reduction of an oxide by aluminium is called as Roasting. True/Fal...

    Text Solution

    |

  11. For the pyrometallurgical method used for the extraction of copper fro...

    Text Solution

    |

  12. In Fe extraction, the roasting is carried out because

    Text Solution

    |

  13. Select the correct statements (Ellingham diagram) :

    Text Solution

    |

  14. Select the correct statements for Ellingham diagram.

    Text Solution

    |

  15. The extraction of metals from sulphide ore involves

    Text Solution

    |

  16. In the leaching of Ag(2)S with NaCN, a stream air is also passed. It i...

    Text Solution

    |

  17. In the commercial extraction of iron, roasting is adopted because

    Text Solution

    |

  18. Select the correct statements :

    Text Solution

    |

  19. Select the correct statements for calcination :

    Text Solution

    |

  20. H(2) is not widely used as the reducing agent in metallurgical process...

    Text Solution

    |