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प्रश्न
Outline the principles behind the refining of metals by the following methods:
Zone refining method
उत्तर
Zone refining Method:
Zone refining method is based on the principle that impurities are more soluble in the molten state than in the solid state of a metal.
This method is used in the purification of elements like Germanium(Ge), Silicon(Si), Indium (In) etc.
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संबंधित प्रश्न
Describe the roles of the following: NaCN in froth floatation process
Name the method of refining which is Used to obtain low boiling metal.
In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?
(i) Heating with stream of carbon monoxide.
(ii) Heating with iodine.
(iii) Liquation.
(iv) Distillation.
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
Which method is used for refining Zr and Ti? Explain with equation.
Assertion: Zirconium can be purificed by Van Arkel method.
Reason: ZrI4 is volatile and decomposes at 1800 K.
Assertion: Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.
Reason: Copper is extracted by hydrometallurgy.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
