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Which of the following reaction is possi...

Which of the following reaction is possible at anode ?

A

`2Cr^(3+) + 7 H_(2)Orarr Cr_(2)O_(7)^(2-) + 14H^(+)`

B

`F_(2)rarr 2F^(-)`

C

`1//2O_(2)+2H^(+)rarrH_(2)O`

D

none of these

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The correct Answer is:
A
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