4K(2) Cr(2) O(7) overset(heat)rarr 4K(2)...

`4K_(2) Cr_(2) O_(7) overset(heat)rarr 4K_(2) CrO_(4) + 3O_(2) + X`. In the above reaction `X` is

A

`CrO_(3)`

B

`Cr_(2)O_(7)`

C

`Cr_(2)O_(3)`

D

`CrO_(5)`

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The correct Answer is:

C

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