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Why should the metal sulphides and carbo...

 Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them? 

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This is because it is easier to obtain metals from their oxides (by reduction) than from carbonate or sulphide ores. So, before reduction the ore must be converted into metal oxide which can then be reduced. 
Caicination or roasting is done depending on the nature of ore, to convert the ore into oxide. A-carbonate ore is converted into oxide by caicination whereas a sulphide ore is converteq into oxide by roasting.
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Give reasons for the following: Prior to reduction,the metal sulphides and carbonates must be converted into metal oxides for extracting metals.

Give reason for the following: Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Knowledge Check

  • A sulphide ore is converted into metal oxide by the process of:

    A
    carbonation
    B
    roasting
    C
    calcination
    D
    anodising

  • Thermite process is used to extract metals

    A
    When their oxides can't be reduced by carbon
    B
    When their carbonates do not yield oxides by thermal decomposition
    C
    When their sulphides cant's be converted into oxides by roasting
    D
    When their melting points are very high

  • The common method of extraction of metals from oxide ores is

    A
    Reduction with carbon
    B
    Reduction with hydrogen
    C
    Reduction with aluminium
    D
    Electrolytic method.

    • Similar Questions

    Explore conceptually related problems

    Give reason: Carbonate and sulphide ores are usually converted into oxides during the process of extraction

    (i) Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals. (ii) Ionic compounds have generally high melting points. (iii) Hydrogen is not a metal but is has been assigned a place in the reactivity series of metals. (iv) The galvanised iron article is protected against rusting even if the zinc layer is broken.

    How is mercury extracted from its sulphide ore? Write the balanced chemical equations involved in the process. Why are carbonate or sulphide ores converted to oxides during the process of extraction? Is magnesium oxide an ionic compound or a covalent compound? Give reasons to support your answer.

    Nitrate is converted into metal oxide on heating. This metal is:

    Which of them is used in extraction of metals ?

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