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JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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Which element is purified by Zone refining?
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Correct option: B
Ge  and  Si\mathrm{Ge}\;\mathrm{and}\;\mathrm{Si}
Option B (Ge  and  Si\mathrm{Ge}\;\mathrm{and}\;\mathrm{Si}) is correct because both Germanium and Silicon are purified using the zone refining method.

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Which of the following is used as a stabilizer during the concentration of sulphide ores? Which statement is correct? Diaspora is: Following method is not used for extraction of Al Carbon reduction method is commercially used for the reduction of The metal which is purified by zone refining is
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