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प्रश्न
Describe the roles of the following: SiO2 in the extraction of copper from copper matte
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उत्तर
In the extraction of copper from copper matte, SiO2 is used to remove iron oxide as slag
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संबंधित प्रश्न
Write the names and chemical formulae of any one ore of zinc.
Silica is added to roasted copper ore during smelting process to remove _______.
(A) ferrous sulphide
(B) ferrous oxide
(C) cuprous sulphide
(D) cuprous oxide
Mention names and formulae of two ores of alumunium.
Indicate the principle behind the method used for the refining of zinc.
Define leaching.
Why does copper obtained in the extraction from copper pyrites have a blistered appearance?
In the extraction of aluminium by Hall-Heroult process, purified \[\ce{Al2O3}\] is mixed with \[\ce{CaF2}\] to:
(i) lower the melting point of \[\ce{Al2O3}\].
(ii) increase the conductivity of molten mixture.
(iii) reduce \[\ce{Al^{3+}}\] into \[\ce{Al(s)}\].
(iv) acts as catalyst.
The important ore of iron is:-
In the extraction of iron, the slag produce is
Calamine and Malachite, respectively, are the ores of ______.
