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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.
Name the method of refining of metals such as Germanium.
Explain column chromatography.
Outline the principles of refining of metals by the following method:
Vapour phase refining
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
Write the chemical equations involved in van Arkel method for refining zirconium metal.
Indicate the principle behind the method used for the refining of Nickel.
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Write down the reaction taking place in blast furnace related to the metallurgy of iron in the temperature rnge 500 K – 800 K. What is the role of limestone in the metallurgy of iron?
What happens when NaCN is added in an ore containing PbS and ZnS during concentration by froth floatation method?
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: Nickel can be purified by Mond process.
Reason: \[\ce{Ni(CO)4}\] is a volatile compound which decomposes at 460 K to give pure Ni.
Describe a method for refining nickel.
Describe a method for refining nickel.
