1.

Solubilty product of Mg(OH)_(2),Cd(OH)_(2),Al(OH)_(3) and Zn(OH)_(2) are 4xx10^(-11),8xx10^(-6),8.5xx10^(-23) and 1.8xx10^(-14) resectively. The cation, that will precipitate first as hydroxide, on adding limited quantity of NH_(4)OH in a solution containing equimolar amount of metal cation, is :

Answer»

`Al^(3+)`
`ZN^(2+)`
`MG^(2+)`
`Cd^(2+)`

ANSWER :a


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