JEE Main 20245 Apr, Morning shiftChemistryEasyRedox Reactions and Electrochemistry138× since 2002The reaction at cathode in the cells commonly used in clocks involves.AOption A. oxidation of Mn\mathrm{Mn}Mn from +2 to +7BOption B. reduction of Mn\mathrm{Mn}Mn from +4 to +3COption C. oxidation of Mn\mathrm{Mn}Mn from +3 to +4DOption D. reduction of Mn\mathrm{Mn}Mn from +7 to +2CheckSkip · show solution
