1.KCN\text{KCN}KCN is used for separating:Note: More than one option may be correct.a.Co2+\text{Co}^{2+}Co2+ and Ni2+\text{Ni}^{2+}Ni2+b.Mn2+\text{Mn}^{2+}Mn2+ and Zn2+\text{Zn}^{2+}Zn2+c.Ba2+\text{Ba}^{2+}Ba2+ and Ca2+\text{Ca}^{2+}Ca2+d.Cu2+\text{Cu}^{2+}Cu2+ and Cd2+\text{Cd}^{2+}Cd2+Login to continueOnly logged in users canattempt or see the solution.