Which process produces the most quantity of ATP per molecule of glucose?

Krebs's cycle or citric acid cycle or T.C.A. ( Tricarboxylic acid. ) cycle part of 'biological oxidation' gives maximum energy. As in this part of biological oxidation that oxygen is used to get 6 carbon bi oxide and 6 water molecules. About 70 % of the ATP molecules are produced in Krebs's cycle.