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प्रश्न
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
विकल्प
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Assertion and reason both are wrong.
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उत्तर
Both assertion and reason are true but reason is not the correct explanation of assertion.
Explanation:
In zone refining method, the impurities of semiconductors are more soluble in molten zone and the ultrapure semiconductor crystallizes.
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संबंधित प्रश्न
Name the method used for the refining of Nickel metal.
Name the method used for the refining of zirconium.
Name the method of refining of metals such as Germanium.
What is the principle behind the zone refining of metals?
Describe the roles of the following: NaCN in froth floatation process
Explain column chromatography.
What criterion is followed for the selection of the stationary phase in chromatography?
Write the principle behind the following methods of refining:
Vapour-phase refining
What happens when Silver is leached with NaCN in the presence of air?
What happens when NaCN is added in an ore containing PbS and ZnS during concentration by froth floatation method?
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.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
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.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
