JEE Main · 2019 · 10 Apr 2019 · Shift 1 · General Principles and Processes of Isolation of Metals

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Match the refining methods (Column I) with metals (Column II).

Column I
(Refining methods)
(I) Liquation
(II) zone Refining
(III) Mond process
(IV) Van Arkel Method

Column II
(Metals)
(a) Zr
(b) Ni
(C) Sn
(d) Ga

(A)(I) - (b); (II) - (c); (III) - (d); (IV) - (a)
(B)(I) - (b); (II) - (d); (III) - (a); (IV) - (c)
(C)(I) - (c); (II) - (a); (III) - (b); (IV) - (d)
(D)(I) - (c); (II) - (d); (III) - (b); (IV) - (a)✓ Correct

Answer: (D)

Solution

Each metal pairs with the method that suits it. Liquation serves low-melting tin; zone refining purifies semiconductor-grade material such as gallium; the Mond carbonyl process refines nickel; and the van Arkel iodide-decomposition method is used for zirconium and titanium. So tin goes with liquation, gallium with zone refining, nickel with the Mond process and zirconium with van Arkel.

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JEE Main · 2019 · 10 Apr 2019 · Shift 1 · General Principles and Processes of Isolation of Metals

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