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  4. Method used for obtaining highly pure silicon used as a semiconductor material, is

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Q. Method used for obtaining highly pure silicon used as a semiconductor material, is

General Principles and Processes of Isolation of Elements

Solution:

Si obtained by reduction of $SiCl_4$ with $H_2$ is further purified by zone refining method to get Si of very high purity. Silicon is purified by zone-refining process because the impurities present in it are more soluble in the liquid phase than in the solid phase.