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Q.

A solution containing a group-IV cation gives a precipitate on passing H₂S. A solution of this precipitate in dil. HCl produces a white precipitate with NaOH Solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is.

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a

${Mn}^{2 +}$

b

${Co}^{2 +}$

c

${Zn}^{2 +}$

d

${Ni}^{2 +}$

answer is D.

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Detailed Solution

ZnS is white precipitate.

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