Which indicator should be used in titrating KOH against oxalic acid ?

Which of following indicators is used in the titration of oxalic acid with sodium hydroxide solution?

Which of the following indicators is used in the titration of KMnO_(4) against sodium oxalate in an acidic medium?

Which indicator is most commonly used for the titration of a strong acid against a strong base?

Name the indicator used in the titration of Fe^(2+) against MnO_4^- in an acid medium.

Determine the molarity of the given KMnO_(4) solution by titrating it against (M)/(10) oxalic acid solution,