Home
Class 12
CHEMISTRY
Which of the following statements are co...

Which of the following statements are correct?

A

A depressant prevents certain type of particle to come to the froth.

B

Copper matte contains `Cu_(2)S` and `ZnS`

C

The solidified copper obtained from reverberatory furance has blistered appearace due to evolution of `SO_(2)` during the extraction.

D

Zinc can be extracted by self-reduction

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Which of the following statement are correct:

Which of the following statement are correct?

Which of the following statement are correct ?

Which of the following statements is correct?

ALLEN-METALLURGY-EXERCISE -04
  1. The main reaction occuring in blast furnace during the extraction of i...

    Text Solution

    |

  2. In which of the following method of purification metal is converted to...

    Text Solution

    |

  3. Which of the following statements are correct?

    Text Solution

    |

  4. In the extraction of chlorine from brine

    Text Solution

    |

  5. Why is an external emf of more than 2.2V required for the extraction o...

    Text Solution

    |

  6. At temperature above 1073K coke can be used to reduce FeO to Fe. How c...

    Text Solution

    |

  7. Wrought iron is the purest form of iron. Write a reation used for the ...

    Text Solution

    |

  8. How is copper extracted from low grade copper ores?

    Text Solution

    |

  9. Write two basic requirements for refining of a metal by Mond process a...

    Text Solution

    |

  10. Although carbon and hydrogen are better reducing agents but they are n...

    Text Solution

    |

  11. How do we separae two sulphide ores by Froth Floatation Method? Explai...

    Text Solution

    |

  12. The purest form of iron is prepared by oxidising impurities from cast ...

    Text Solution

    |

  13. The mixture of compounds A and B is passed through a column of AI(2)O(...

    Text Solution

    |

  14. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

    Text Solution

    |

  15. Why are sulphide ores converted to oxide before reduction?

    Text Solution

    |

  16. Which method is used for refining Zr and Ti? Explain with equation.

    Text Solution

    |

  17. What should be the considerations during the extraction of metals by e...

    Text Solution

    |

  18. What is the role of flux in metallurgical processes?

    Text Solution

    |

  19. How are metals used as semiconductor refined? What is the principle of...

    Text Solution

    |

  20. Write down the reactions taking place in Bast furnace related to the m...

    Text Solution

    |