Qualitative Analysis - Result Question 20

20. Which one amongst the following pairs of ions cannot be separated by $H _2 S$ in dilute $HCl$ ?

(1986,1 M)

(a) $Bi^{3+}, Sn^{4+}$

(b) $Al^{3+}, Hg^{2+}$

(c) $Zn^{2+}, Cu^{2+}$

(d) $Ni^{2+}, Cu^{2+}$

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Answer:

Correct Answer: 20. (a)

Solution:

Both $Bi^{3+}$ and $Sn^{4+}$ belongs to same analytical group II.