Which of the following reaction is possi...

Which of the following reaction is possible at anode ?

A

`2Cr^(3+) + 7H_2O to Cr_2O_7^(2-) + 14H^(+) `

B

`F_2 to 2F^(-)`

C

`(1)/(2) O_2 + 2H^(+) to H_2O`

D

None of these

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The correct Answer is:

A

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