Assertion (A): A is very dilute acidic solution of `Cd^(2+)` and `Ni^(2+)` gives yellow precipitate of `CdS` on passing hydrogen sulphide.
Reason (R) : Solubility product of `CdS` is more than that of `NiS`.

Options

A. Statement 1 is true, statement 2 is true, statement 2 is a correct explanation for statement 1
B. Statement 1 is true, statement 2 is true, statement 2 is not a correct explanation for statement 1
C. Statement 1 is true, statement 2 is false
D. Statement 1 is false, statement 2 is true

Answer

C

Explanation

`Cd^(2+)` is a `2^(nd)` group radical and `Ni^(2+)` is a `4^(th)` group radical. So solubility product of NiS has to be more than CdS. Further `Cd^(2+)` gives yellow colour of CdS with `H_(2)S`, but `Ni^(2+)` gives black colour of NiS with `H_(2)S`. So both statement 1 and statement 2 are wrong.