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| Column $I$ (શુદ્ધિકરણની પદ્ધતિઓ) | Column $II$ (ધાતુઓ) |
| $(I)$ લિક્વેશન (Liquation) | $(a)$ $Zr$ |
| $(II)$ ઝોન રિફાઇનિંગ | $(b)$ $Ni$ |
| $(III)$ મોન્ડ પ્રક્રિયા | $(c)$ $Sn$ |
| $(IV)$ વાન આર્કેલ પદ્ધતિ | $(d)$ $Ga$ |
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