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K2Cr2O4 on reaction with H2O2, in acidic...

`K_2Cr_2O_4 `on reaction with` H_2O_2`, in acidic medium gives -

A

Blue colour, `CrO_2`

B

Green colour, `Cr_2O_3`

C

Orange colour, `CrO_3`

D

Blue colour, `CrO_5`

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