[" A battery is constructed of Cr and "Na_(2)Cr_(2)O_(7)" .The unbalanced chemical equation when such a battery dischary "],[" is following: "Cr+H^(+)rarr Cr^(3+)+H_(2)O+Na^(+)],[Na_(2)Cr_(2)O_(7)+PlEEE" ONLINE-2015"],[" If one Faraday of electricity is passed through the battery during the charging,the number of moles of Ch "],[" removed from the solution is :- "],[[" (1) "(3)/(3)," (2) "(2)/(3)," (3) "(1)/(3)," (4) "(4)/(3)]]