V(1)mL of 0.1M K(2)Cr(2)O(7) is needed f...

`V_(1)mL` of `0.1M K_(2)Cr_(2)O_(7)` is needed for complete oxidation of `0.678gN_(2)H_(4)` in acidic medium. The volume of `0.3M KMnO_(4)` needed for same oxidation in acidic medium will be

`2/5V_(1)`

`5/2V_(1)`

`113V_(1)`

Cannot be determined

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