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प्रश्न
Cassiterite is a copper ore.
पर्याय
Right
Wrong
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उत्तर
Cassiterite is a copper ore- Wrong
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संबंधित प्रश्न
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.
Give the effect of heat on their: carbonates
Name:
(a) the processes involved in
concentration :-
Explain the following terms:
(c) slag
Explain the following terms:
smelting
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
On which factors does the purification of metals depend?
`2AgNO_3`
...........................
what does it form with silica present in the ore?
Distinguish between electrolytic methods of reduction and refining.
Which metal is used for:
lithographic plates for printing
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite.
The following is a sketch of an electrolytic cell used in the extraction of aluminium :
(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?
Explain the hydraulic separation method with a neat labelled diagram.
Identify the following method of concentration of ores and explain briefly.
Zirconium is refined by ____________.
Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27°C? (R = 2 cal K-1 mol-1).
Bassemerisation is used in the extraction of ______.
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
Name the process that is employed to refine aluminium.
