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प्रश्न
What is 'copper matte' ?
उत्तर
During extraction of copper from cuprous oxide in a reverberatory furnace, cuprous oxide is mixed with silica and heated. This leads to separation of iron oxide as iron silicate (slag) and the copper obtained after this procedure is known as copper matte. It contains Cu2S and FeS. It is then put in a silica-lined converter to remove the remaining FeO and FeS present in the matte as slag (FeSiO3).
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संबंधित प्रश्न
Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.
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How will you convert the following:
[Ag(CN)2]− to Ag
Bauxite has the composition
Which among the following statement is correct?
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.
Which of the following reactions occur during calcination?
(i) \[\ce{CaCo3 -> CaO + CO2}\]
(ii) \[\ce{2FeS2 + 11/2 O2 -> Fe2O3 + 4SO2}\]
(iii) \[\ce{Al2O3. {x}H2O -> Al2O3 + {x}H2O}\]
(iv) \[\ce{ZnS + 3/2 O2 -> ZnO + SO2}\]
The main reactions occurring in blast furnace during extraction of iron from haematite are:
(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(ii) \[\ce{FeO + SiO2 -> FeSiO3}\]
(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]
(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]
Identify a mineral for the major source of boron from the following list?
