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Question

A metal (X) dissolves both in dilute HCl and dilute NaOH to liberate H2. Addition of NH4Cl and excess NH4OH to an HCl solution of X produce Y as a precipitate. Y is also produced by adding NH4Cl to the NaOH solution of X. The species X and Y, respectively, are


A

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B

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C

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D

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Solution

The correct option is B


ZnCl2 gives no ppt with NH4Cl+NH4OH solution. But AlCl3 gives gelatinious white ppt of Al(OH)3 with NH4Cl+NH4OH.


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