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{:("Column-I","Column"-II),((A) Ag^(+) Cu^(+2),(P) NH_(4) Cl + NH_(4) OH),((B) Cu^(+2) Mn^(+2),(Q) H_(2)S// HCl),((C)Fe^(+2)Mg^(+2),,(R) HCl),((D)Mg^(+2),Zn^(+2),NH_(4)OH+NH_(4)Cl + H_(2)S):} |
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