`(NH_(4))_(2)Cr_(2)O_(7)overset(Delta)rarrN_(2)+4H_(2)O+X` ( Chromium compound), oxidation state of chromium that changes from `(NH_(4))_(2)Cr_(2)O_(7)` to X is
A. 3
B. 4
C. 5
D. -3

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1 Answers

Correct Answer - D
`(NH_(4))_(2)overset(+VI)(Cr_(2)O^(7))overset(Delta)(rarr)overset(+III)(Cr_(2)O_(3)+N_(2)+4H_(2)O`

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