Q. When `H_(2)S` gas was passed into filtrate (P), a coloured precipitate was obtained, then cation present in the filtrate is:

Options

A. `Zn^(2+)(aq.)`
B. `Cr^(3+)(aq.)`
C. `Al^(3+)(aq.)`
D. `Pb^(2+)(aq.)`

Answer

D

Explanation

`PbS` (Black ppt).