1.

A solution containing \[A{{s}^{3+}},C{{d}^{2+}},N{{i}^{2+}}\] and \[Z{{n}^{2+}}\] is made alkaline with dilute \[N{{H}_{4}}OH\] and treated with \[{{H}_{2}}S\]. The precipitate obtained will consist of

A. \[A{{s}_{2}}{{S}_{3}}\] and CdS  
B. CdS.NiS and ZnS
C. NiS and ZnS    
D. Sulphide of all ions
Answer» E.


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