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प्रश्न
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
पर्याय
sulphides of copper (II) and iron (II)
sulphides of copper (II) and iron (III)
sulphides of copper (I) and iron (II)
sulphides of copper (I) and iron (III)
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उत्तर
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains sulphides of copper (I) and iron (II).
Explanation:
The ore is heated in a reverberatory furnace after mixing with silica. In the furnace, iron oxide 'slags of' as iron silicate and copper is produced in the form of copper mattie this contains \[\ce{Cu2S}\] and \[\ce{FeS}\].
\[\ce{FeO + SiO2 -> FeSiO3 (slag)}\]
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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
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
What is the role of limestone in the extraction of iron from its oxides?
Differentiate between “minerals” and “ores”.
Define Leaching.
In the extraction of zinc from zinc blende:
(i) Give an equation to show how zinc oxide is converted to zinc.
(ii) How is impure zinc finally electro-refined?
Give the uses of zinc.
Metal which is found in free state is:
Which among the following statement is correct?
The most abundant metal on earth is:
The sulphide ore of iron is ____________.
Carbonate ore of iron is ____________.
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) \[\ce{CaO + SiO2 -> CaSiO3}\]
Extraction of zinc from zinc blende is achieved by:-
Metal always found in Free State is
Which of the following is not an ore of magnesiuim?
Match List - I with List - II.
| List - I | List - II | ||
| (One) | (Composition) | ||
| (A) | Siderite | (I) | FeCO3 |
| (B) | Malachite | (II) | CuCO3 · Cu(OH)2 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Calamine | (IV) | ZnCO3 |
Choose the correct answer from the options given below:
