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प्रश्न
Complete the following flowchart.
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उत्तर
| Separation method of metals | |||
| Wilfley table method | Hydraulic separation method | Magnetic separation method | Froth floatation method |
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संबंधित प्रश्न
Give the importance of the following for living beings:
Nitrogen
`Ag2O`
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Where are the cathode and anode in the electrolytic cell? Name the material used for these?
state the reactions at the two electrodes ?
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.
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
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?
The chemical formula of zinc blend is _______.
Write the molecular formulae of the following compound.
Copper pyrite
Write the molecular formulae of the following compound.
Stannic oxide
Write the molecular formulae of the following compound.
Ferrous tungstate
Complete flow chart given below.
The chemical name of rust is ______.
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Limestone is used as a flux in the extraction of ______.
After partial roasting, the sulphide of copper is reduced by ______.
Name the process that is employed to refine aluminium.
