Home
Class 12
CHEMISTRY
What is roasting ? Explain....

What is roasting ? Explain.

Text Solution

Verified by Experts

The process of heating the ore in the presence of excess of air to a high temperature below their melting point.
Roasting is carried out in a revernaratory furnace. During roasting sulphide ores are converted into oxide ores.
`2ZnS + 3O_(2) rarr 2ZnO + 2SO_(2)`
Promotional Banner

Topper's Solved these Questions

  • EXAM QUESTION PAPER JULY WITH ANSWER (2015)

    SUBHASH PUBLICATION|Exercise PART E|21 Videos

  • HALOALKANES AND HALOARENES

    SUBHASH PUBLICATION|Exercise Questions|42 Videos

Similar Questions

Explore conceptually related problems

What is breathing ? Explain the mechanism.

What is smelting ? Explain the process with example.

What is predation? Explain the characteristic of predation.

What is dialysis ? Explain ?

What is menstruation? Explain.

What is calcination? Explain.

What is octet rule? Explain with an example.

SUBHASH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Questions
  1. Name the process used for the concentration of sulphide ores.

    Text Solution

    |

  2. Describe the three steps involved in the leaching of bauxite to get p...

    Text Solution

    |

  3. What is roasting ? Explain.

    Text Solution

    |

  4. What is calcination? Explain.

    Text Solution

    |

  5. What is the role of lime stone in the extraction of iron from the conc...

    Text Solution

    |

  6. Among carbon and carbon monoxide which one is a better reducing agent ...

    Text Solution

    |

  7. Among carbon and carbon monoxide which one is a better reducing agent ...

    Text Solution

    |

  8. What is the role of lime stone in the extraction of iron from the conc...

    Text Solution

    |

  9. Explain the process of obtaining 'blister copper' from copper matte'' ...

    Text Solution

    |

  10. Write the composition of copper matte.

    Text Solution

    |

  11. Name the flux used to remove iron impurity from molten copper matte.

    Text Solution

    |

  12. State the role of silica in the metallurgy of Copper.

    Text Solution

    |

  13. During the extraction of aluminium by Hall-Heroult process at which el...

    Text Solution

    |

  14. Draw labelled diagram of Hall-Heroult electrolytic cell for the extrac...

    Text Solution

    |

  15. In the extraction of aluminium by electrolysis. (i) Give the composi...

    Text Solution

    |

  16. During the extraction of aluminium by Hall-Heroult process at which el...

    Text Solution

    |

  17. In the reaction of gold with aquaregia, oxidation state of Nitrogen ch...

    Text Solution

    |

  18. Write the chemical reactions involved in the extraction gold using sod...

    Text Solution

    |

  19. Name any two ores of zinc. How is zinc extracted from zinc oxide?

    Text Solution

    |

  20. Name the reducing agent used in the extraction of zinc from zinc oxide...

    Text Solution

    |