Materials purification: Zone refining is typically used to purify which type of materials? Focus: Ultra-high purity for electronic/semiconductor applications. Choose the best example.
IIT JEE
Chemistry
Difficulty: Easy
Choose an option
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ACopper (Cu) for wiring
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BGermanium (Ge) for semiconductors
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CIron (Fe) for construction steel
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DSilver (Ag) for jewelry
Answer
Correct Answer: Germanium (Ge) for semiconductors
Explanation
Concept
Zone refining moves a molten zone along a rod; impurities concentrate in the melt and are swept to one end. It is used for semiconductors like Ge and Si.Final AnswerGermanium (Ge) for semiconductors.