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FeCr(2)O(4)+Na(2)CO(3)+O(2) overset("Fus...

`FeCr_(2)O_(4)+Na_(2)CO_(3)+O_(2) overset("Fusion")(to) [X] overset(H^(+))underset(H_(2)O)(to) [Y] overset(H_(2)O"/"H^(+))(to) [Z]`
Which of the following statement is true for the compounds [X], [Y] and [Z]?

A

In all three compounds, the chromium is in +6 oxidation state

B

[Z] is a deep blue-voilet coloured compound which decomposes rapidly in aqueous solution into `Cr^(3+)` and dioxygen

C

Saturated solution of [Y] gives bright orange compound, chromic anhydride, with concentrated `H_(2)SO_(4)`

D

All of these

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The correct Answer is:
D
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