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प्रश्न
Give two requirements for vapour phase refining.
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उत्तर
(i) The metal should form a volatile compound with available reagent.
(ii) The volatile compound should be easily decomposable so that the recovery is easy.
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संबंधित प्रश्न
Name the method used for the refining of zirconium.
Describe the roles of the following: NaCN in froth floatation process
Explain column chromatography.
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?
Outline the principles of refining of metals by the following method:
Vapour phase refining
Outline the principles behind the refining of metals by the following methods:
Zone refining method
What happens when Silver is leached with NaCN in the presence of air?
Zone refining is based on the principle that ______.
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.
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Reason: Copper is extracted by hydrometallurgy.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Purification of crude metals by removing metallic and non-metallic impurities is known as ______ of metals.
Electrolytic reduction method is used for the extraction of ______.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
