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The roasting of an ore of a metal usuall...

The roasting of an ore of a metal usually results in conversion of the metal ore to the oxide. Why does the roasting of cinnabar, (HgS) produce metallic mercury rather than an oxide of mercury?

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Discuss the process of conversion of Ores into oxides by (1) calcination and(2) roasting

Fill in the blanks : Conversion of carbonate ore to metal oxides are done by …………..

Knowledge Check

  • Which metal exahibits more than one oxidation state:

    A
    Na
    B
    Mg
    C
    Fe
    D
    Al
  • The common method of extraction of metals from oxide ores involves :

    A
    Reduction with carbon
    B
    Reduction with aluminium
    C
    Reduction with hydrogen
    D
    Electrolytic method
  • The common method of extraction of metals from oxide ores involves :

    A
    Reduction with carbon
    B
    Reduction with aluminium
    C
    Reduction with hydrogen
    D
    Electrolytic method
  • Similar Questions

    Explore conceptually related problems

    Name two metal sulphides which get converted into the corresponding metals during roasting. When does it happen so?

    Why is the reduction of a metal oxide easier, if the metal formed is in liquid state at the temperature of reduction?

    Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?

    The halides of transition elements become more covalent with increasing oxidation state of the metal. Why ?

    The common method of extraction of metals from oxide ores involves :