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प्रश्न
Name the method used for refining of copper metal.
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उत्तर
Copper is refined by an electrolytic method. Pure copper is obtained at the cathode.
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संबंधित प्रश्न
Write the names and chemical formulae of any one ore of zinc.
Purification of aluminium by electrolytic refining is carried out by
(a)Hoope process
(b)Hall process
(c)Baeyer process
(d)Serperck process
Indicate the principle behind the method used for the refining of zinc.
Differentiate between “minerals” and “ores”.
Define leaching.
Write the names and chemical formulae of any ‘two’ minerals of aluminium.
What is 'copper matte' ?
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
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) \[\ce{ZnS + 3/2 O2 -> ZnO + SO2}\]
Pyrolusite is ______.
