Which of the following compounds, on rea...

Which of the following compounds, on reaction with NaOH and `Na_(2)O_(2)` gives yellow colour?

A

`ZN(OH)_(2)`

B

`Al(OH)_(3)`

C

`Cr(OH)_(3)`

D

`CaCO_(3)`

Verified by Experts

The correct Answer is:

C

Yellow colour is due to the formation of `CrO_(4)^(2-)` ion .
`Cr(OH)_(3) + NaOH + Na_(2)O to Na_(2) CrO_(4) + 2H_(2)O`

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