Question:
Which of the following elements is refined by zone refining?
Which of the following elements is refined by zone refining?
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Zone refining is commonly used for semiconductor materials like silicon, germanium, and gallium.
Updated On: Mar 20, 2026
- Gallium
- Bismuth
- Copper
- Zinc
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The Correct Option is A
Solution and Explanation
Step 1: Understanding zone refining.
Zone refining is a purification technique used to obtain very high purity metals. It is mainly applied to metals used in semiconductors, where even small impurities can affect performance.
Step 2: Analyzing the options.
(A) Gallium: Gallium is a semiconductor element and is purified using zone refining to achieve extremely high purity.
(B) Bismuth: Bismuth is generally refined using electrolytic or other chemical methods.
(C) Copper: Copper is refined mainly by electrolytic refining, not zone refining.
(D) Zinc: Zinc is refined using distillation or electrolytic methods.
Step 3: Conclusion.
Gallium is refined by zone refining because it is used in semiconductor applications requiring high purity.
Zone refining is a purification technique used to obtain very high purity metals. It is mainly applied to metals used in semiconductors, where even small impurities can affect performance.
Step 2: Analyzing the options.
(A) Gallium: Gallium is a semiconductor element and is purified using zone refining to achieve extremely high purity.
(B) Bismuth: Bismuth is generally refined using electrolytic or other chemical methods.
(C) Copper: Copper is refined mainly by electrolytic refining, not zone refining.
(D) Zinc: Zinc is refined using distillation or electrolytic methods.
Step 3: Conclusion.
Gallium is refined by zone refining because it is used in semiconductor applications requiring high purity.
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