| Column $I$ (शोधन विधियाँ) | Column $II$ (धातुएँ) |
| $(I)$ द्रवीकरण (Liquation) | $(a)$ $Zr$ |
| $(II)$ मंडल परिष्करण (Zone refining) | $(b)$ $Ni$ |
| $(III)$ मॉन्ड प्रक्रम | $(c)$ $Sn$ |
| $(IV)$ वॉन आर्कल विधि | $(d)$ $Ga$ |
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