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प्रश्न
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
पर्याय
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
What is the principle behind the zone refining of metals?
Describe the roles of the following: NaCN in froth floatation process
Explain:
Zone refining
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?
What criterion is followed for the selection of the stationary phase in chromatography?
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
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?
Name the method of refining which is Used to obtain semiconductor of high purity.
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.
How are metals used as semiconductors refined? What is the principle of the method used?
Give two requirements for vapour phase refining.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
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.
