Hello aspirant

Physical education is a graded Subject . It is mandatory to pass in P. E.

But it can't be replaced by any other subject . Drawing  also extra subject.  If you have not done well in chemistry , and if you have PCMB or biotechnology.

Suppose you are not qualifying with PCM, then maths  can be replaced by biology or biotechnology or IT or Technical subject to qualify

But  PC y are compulsory subjects  .If you are getting even passing marks in physics and chemistry then one of the above subject can be taken as 3rd subject in which you have got good marks but not drawing and P.E.

But to qualify for IIT or nit, you have to score 75% aggregate .