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Question

Which one of the following pairs of ions cannot be separated by H2S in dil.HCl?

A
Bi3+, Sn4+
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B
Al3+, Hg2+
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C
Cu2+, Zn2+
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D
Ni2+, Cu2+
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Solution

The correct option is A Bi3+, Sn4+
Option (A) is correct.
Bi3+, Sn4+ cannot be separated by H2S in dil.HCl as both the cations belong to second group.

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