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प्रश्न
Differentiate between “minerals” and “ores”.
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उत्तर
Minerals are naturally occurring chemical substances containing metals. They are found in the Earth’s crust and are obtained by mining.
Ores are rocks and minerals viable to be used as a source of metal.
For example, there are many minerals containing zinc, but zinc cannot be extracted profitably (conveniently and economically) from all these minerals.
Zinc can be obtained from zinc blende (ZnS), calamine (ZnCO3), zincite (ZnO) etc. Thus, these minerals are called ores of zinc.
संबंधित प्रश्न
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.
Purification of aluminium by electrolytic refining is carried out by
(a)Hoope process
(b)Hall process
(c)Baeyer process
(d)Serperck process
Describe the roles of the following: SiO2 in the extraction of copper from copper matte
Name the method used for refining of copper metal.
Define leaching.
Draw a neat, well labelled diagram of electrolytic cell for extraction of aluminium
Metals which occur in their native state in nature:
The most abundant metal on earth is:
The sulphide ore of iron is ____________.
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
Identify a mineral for the major source of boron from the following list?
The important ore of iron is:-
In the thermite process, the reducing agent is:
Metal always found in Free State is
Which of the following is not an ore of magnesiuim?
The ore that contains both iron and copper is ______.
