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प्रश्न
What are the differences between minerals and ores?
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उत्तर
Minerals:
- Minerals contain a low percentage of metal.
- Metal cannot be extracted easily from minerals.
- Clay \[\ce{Al2O3.SiO2.2H2O}\] is the mineral of aluminium.
Ores:
- Ores contain a large percentage of metal.
- Ores can be used for the extraction of metals on a large scale readily and economically.
- Bauxite \[\ce{Al2O3.2H2O}\] is the ore of aluminium.
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संबंधित प्रश्न
Write chemical formulae of the following ores :
(a) Calamine
(b) Haematite
(c) Magnetite
(d) Corundum
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?
What is the role of CO in the extraction of Iron?
Which of the ores mentioned can be concentrated by magnetic separation method?
What is the role of the following compound-
SiO2 in the extraction of copper from copper pyrites?
Describe the role of the cryolite in the extraction of aluminium from pure alumina.
The most abundant metal on earth is:
The sulphide ore of iron is ____________.
The ore that contains both iron and copper is ______.
