The method used for producing semiconductor grade metals of high purity is

The method used for producing semiconductor grade metals of high purity is
  1. poling
  2. electrolysis
  3. zone refining
  4. vapour phase refining

Solution

Zone refining is used for refining of semiconductor metals ( $\mathrm{Si}, \mathrm{Ge}$, etc.) that gives highly pure semiconductors.

Asked in: AP EAMCET 2018 (22 Apr Shift 2)

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