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The yellow colour solution of `Na_(2)CrO_(4)` changes to orange red on passing `CO_(2)` gas due to the formation of `:`

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The yellow colour solution of `Na_(2)CrO_(4)` changes to orange red on passing `CO_(2)` gas due to the formation of `:`
A. `CrO_(5)` and `H_(2)O`
B. `CrO_(3)`
C. `Na_(2)Cr_(2)O_(7)` is not an oxidizing agent
D. `Cr_(2)O_(30`
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Correct Answer - C
Solution.
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