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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
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(i) ∆GΘ for the overall reaction is negative.
(ii) ∆GΘ for the overall reaction is positive.
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(iv) EΘ for overall reaction has positive value.
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Match the items of Column I with the items of Column II and assign the correct code:
| Column I | Column II |
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| (B) Impure metal to volatile complex | (2) Fractional distillation |
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| (D) Purification of mercury | (4) Chromatography |
| (5) Liquation |
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