A) \[C{{u}^{2+}}\]ions
B) \[C{{d}^{2+}}\] ions
C) \[N{{i}^{2+}}\] ions
D) \[C{{o}^{2+}}\] ions
Correct Answer: B
Solution :
Yellow precipitate is formed due to the formation of \[CdS\]. \[\underset{Yellow\,\,precipiatate}{\mathop{C{{d}^{2+}}+{{H}_{2}}S\xrightarrow{{}}Cds\downarrow }}\,+2{{H}^{+}}\]c
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