Zone refining is a method to obtain [KCET 1993]

1.	Zone refining is a method to obtain [KCET 1993]
A.	Very high temperature
B.	Ultra-pure Al
C.	Ultra-pure metals
D.	Ultra-pure oxides
Answer» D. Ultra-pure oxides

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Zone refining is a method to obtain [KCET 1993]

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