Zn2+,KCNandHClandK4[Fe(CN)6]
Ni2+,HClandKCNandKOH
Cd2+,KCNandHClandNa2HPO4
Co2+,HClandKCNandK2CrO4
The solution requires context about what M1, Q, R, and S represent. The given options suggest these are chemical species and reagents involved in some chemical reactions or tests. Without additional information specifying the nature of these tests or the expected outcomes, it is impossible to provide a complete and correct solution. The question needs to define what M1, Q, R and S represent to allow for an answer.