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प्रश्न
How are metals used as semiconductors refined? What is the principle of the method used?
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उत्तर
Semiconducting metal is produced by zone refining method which is based on the principle that the impurities are more soluble in melt than in the solid state of metals.
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संबंधित प्रश्न
Name the method used for the refining of zirconium.
What criterion is followed for the selection of the stationary phase in chromatography?
Describe a method for refining nickel.
Outline the principles of refining of metals by the following method:
Vapour phase refining
Describe ‘froth floatation process’ for concentration of sulphide ore.
Indicate the principle behind the method used for the refining of Nickel.
Outline the principles behind the refining of metals by the following methods:
Zone refining method
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Name the method of refining which is Used to obtain semiconductor of high purity.
Electrolytic refining is used to purify which of the following metals?
Why is an external emf of more than 2.2 V required for the extraction of \[\ce{Cl2}\] from brine?
Give two requirements for vapour phase refining.
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.
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.
