A) Cupric chloride
B) Cadmium chloride
C) Zinc chloride
D) Sodium chloride
Correct Answer: A
Solution :
\[CuC{{l}_{2}}+{{H}_{2}}S\to \underset{\text{(Black ppt}\text{.)}}{\mathop{CuS\,\,}}\,+2HCl\]
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