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Q.

Which of the following pairs of metals is purified by van Arkel method?

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a

Ni and Fe

b

Ga and In

c

Zr and Ti

d

Ag and Au

answer is C.

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Detailed Solution

In Var Arkel process, impure metal is heated with iodine. A volatile metal iodide is formed which decomposes at 2000 K to give pure metal.
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