Am I eligible for Bank P.O. exams with 58% in 12th and 65 % in B.E.?

I think you are eligible for either CLERK OR PROBATIONARY..

as minimum eligiblity criteria is One must completed his graduation with atleast of 55% aggreagate and 12th class with a percentage of 60% for probationary..

and for clerical one need to clear 12th class with a minimum percentage of 60%..(or in highest degree)

Donot worry as you eligible and prepare well for exam...