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NEET UG CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
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Assertion : Zone refining is based on the fact that impurities are more soluble in molten state than in solid in the presence of oxygen.
Reason : This method is used to prepare pure metal oxides.
Reason : This method is used to prepare pure metal oxides.
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Correct option: D
If both Assertion & Reason are false
Option D (If both Assertion & Reason are false) is correct because zone refining relies on impurities being more soluble in the molten state *without* oxygen, and it's used for metals, not metal oxides.
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