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How is zinc extracted from its ore zinc ...

How is zinc extracted from its ore zinc sulphide or zinc carbonate ?

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The crude zinc suJphide ore is heated strongly in excess of air. Zinc sulphide is converted into zinc oxide. This process is known as roasting.
`underset(" Zinc sulphide ")(2ZnS_((s)))+3O_(2(g))rarrunderset(" Zinc oxde")(2ZnO_((s)))+underset("Sulphur dioxide")(2SO_(2(g)))`
The crude zinc carbonate ore is heated strongly in limited supply of air. Zinc carbonate is converted into zinc oxide. This process is known as calcination.

The zinc oxide is reduced to zinc by using a reducing agent such as carbon.
`underset(" Zinc carbonate ")(ZnCO_(3(s)))rarrunderset(" Zinc oxide")(ZnO_((s)))+underset("Carbon dioxide ")(CO_(2(g)))`
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Knowledge Check

  • Sulphide ore of Zinc is

    A
    Zinc blende
    B
    Sphaelerite
    C
    Frenklinite
    D
    Both (a) and (b)

  • Zinc is extracted from zinc blende by

    A
    Carbon reduction process
    B
    Nitrogen reduction process
    C
    Oxygen reduction process
    D
    All of these

  • The colour of zinc sulphide is

    A
    White
    B
    black
    C
    brown
    D
    red

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    (a) Name the method by which aluminium metal is extracted. (b) Give the name and chemical formula of one ore of copper. (c). How is zinc extracted from its carbonate ore (calamine) ? Explain with equations.

    (a) Which metal is extracted from bauxite ore? (b) Give the name of one ore of iron. Which iron compound is preent in this ore? Write its chemical formula. (c). Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved. (d) Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken. (e) name a common metal which is highly resistant to corrosion.

    Why is zinc not extracted from zinc oxide through reduction using CO?

    Why is zinc not extracted from zinc oxide through reduction using CO?

    How is zinc obtained from zinc blende ? Give chemical reactions.

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