GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ag
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Ge
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Au
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Cu
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Detailed explanation-1: -Zone refining is used for the purification of metals like Si, Ge, Ga which are used in semiconductors.
Detailed explanation-2: -Germanium zone refining is one of the most important techniques used to produce high purity germanium (HPGe) single crystals for the fabrication of nuclear radiation detectors. During zone refining the impurities are isolated to different parts of the ingot.
Detailed explanation-3: -hence gallium is a metalloid so gallium arsenide is purified by zone-refining.
Detailed explanation-4: -Hint-We use zone refining to refine semiconductor metals like silicon (Si), germanium (Ge) to obtain them in their purest form.
Detailed explanation-5: -Generally germanium is purified by zone refining method.