Match the reactions in column I with their respective characteristics given in column II Column – 1 Column – 2 Name and Reaction Characteristics a. P PH H PO -> p. Fractional oxidation number b. C O q. c. CH Cl r. Natural redox reaction d. MnO 4HCl MnCl Cl 2H O -> s. Zero oxidation number e. Photosynthesis t. Disproportionation u. Auto-redox