Question

can potassium permanganate it be called internal indicator

Answer 1

Yes we can say that becoz it works like indicator. An indicator is wot indictor change colour when some solution is added so like wise it also works like indicator

Answer 2

Yes, Potassium permanganate can be called an internal indicator because it can show the end point of the titration by itself. Since it has it's own colour, it can show a change in colour at the end of the reaction.