Which of the following displacement reactions is not possible?

F e (s) + C u S O_{4} (a q .) \to F e S O_{4} (a q .) + C u (s)

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C l_{2} (g) + N a B r (a q .) \to N a C l (a q .) + B r_{2} (g)

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I_{2} (g) + N a B r (a q .) \to N a I (a q .) + B r_{2} (g)

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Z n (s) + C u S O_{4} (a q .) \to Z n S O_{4} (a q .) + C u (s)

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Solution

The correct option is C $I_{2} (g) + N a B r (a q .) \to N a I (a q .) + B r_{2} (g)$
$I_{2}$ is less reactive, it can not displace $B r_{2}$ from $N a B r$ .

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