Advertisements
Advertisements
प्रश्न
Give two requirements for vapour phase refining.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is the principle behind the zone refining of metals?
Explain the principle of the method of electrolytic refining of metals. Give one example.
Explain column chromatography.
What is meant by the term “chromatography”?
Outline the principles behind the refining of metals by the following methods:
Zone refining method
Electrolytic refining is used to purify which of the following metals?
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
Assertion: Zirconium can be purificed by Van Arkel method.
Reason: ZrI4 is volatile and decomposes at 1800 K.
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
Assertion: Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.
Reason: Copper is extracted by hydrometallurgy.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
