Potassium chromate solution is added to an aqueous solution of a metal chlrodie. The precipitate thus obtained are insoluble in acetic acid. These are subjected to flame test, the colour of the flame is

Options

A. Lilac
B. Apple green
C. Crimson red
D. Blue

Answer

B, D

Explanation

`Pb^(2+)` and `Ba^(2+)` both form yellow ppt. with `CrO_(4)^(2-)` ion which is not soluble in `CH_(3)COOH`.
Flame test `Ba^(2+)`-apple green
`Pb^(2+)`-blue