Hi aspirant

It depends on the paper from which you want to do MS/PHD.See you have scored very less.This is just approx the cut off of the paper.With just this marks it is very difficult for you to get IIT madras.IIT Madras is one of the top IITs.You should apply for newer IITs.You might get but very less chances.

Visit the official website of the IITs and there in the notice section you can check the application process has been started.You can apply there.

MS/PHD is more research oriented course and if you are not having good knowledge of the subject then definately you'll be rejected in the interview round.

So you should be prepared for the consequences.

It would be better for you to prepare again for the next year.

Hope this was helpful