Hello

There's no percentage barrier to be eligible for JEE mains

But yes,

To be eligible for NITs, IIITs, GFTIs , jee advanced( for iits) one needs at least  75% marks in aggregate in class 12 if belong to general or obc category or at least  65% marks if belongs to SC/ST or  must be in the top 20 percentile in  class 12 examination.

This % requirement is not only in PCM but in your overall aggregate in class 12th board examination

5 Subjects to be considered for calculating aggregate percentage are :-

• Physics
• Chemistry
• Mathematics
• A language
• Any subject other than listed above

Thank you