Selecting the correct statement if any from the following – InterviewSolution

1.	Selecting the correct statement if any from the following
Answer» during zone rofining of silicon the metal is more soluble in the melt than the impurity metals like Fe, Ag, Zn and HG are extracted/punfied by PYROMETALLURGY white bauxite ore cannot be concentrated by serpeck's process dolomite, magnesile and graphite are used as retractory materials fumaces SOLUTION :In zone refining impurities are more soluble in melt than metal. Metal like Fe, Zn, Hg are extracted by pyro metallurgy but not .Ag. White bauxite is PURIFIED by Serpeck.s process . Doilamite, Magnesite and graphite are used as REFRACTORY materials in furnace.

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