1.

Which of the following reaction is possible at anode?

Answer»

`2Cr^(3+) + 7 H_(2)Orarr Cr_(2)O_(7)^(2-) + 14H^(+)`
`F_(2)rarr 2F^(-)`
`1//2O_(2)+2H^(+)rarrH_(2)O`
none of these

Answer :A


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