If acidified solution of `K_(2)Cr_(2)O_(7) ` turm green on addition of a salt three salt may contain `Fe^(2+)`.

Answer

T

Explanation

`6Fe^(2+) + Cr_(3)O_(7)^(2-) + 14H^(oplus) rarr 6Fe^(oplus) + underset((Green))(2Cr^(3+)) + 7H_(2)O`
`Cr_(2)O_(3)^(2+)//H^(oplus)` can oxidise `Fe^(2+)` in `Fe^(2+)` giving green colouration at the and point