Boric acid cannot be titrated directly with NaOH (Sodim Hydroxide) because the end point is not sharp it undergoes excessive hydrolysis to give break H3BO3 and NaOH
H3BO3 + NaOH ------ Na(B(OH)4)------NaBO2 + 2H2O
Formic and oxalic acid are samething both having same COOH group
Oxalic acid and formic acid directly titrated with NaOH by using Acid-Base titration with the help of the phenopthalein indicator which change the color Colorless to Pink.
So Boric acid can titrated with the help of polyhroxy compound i.e- Catechol,Manitol.