Hello aspirant,

From the 75% criteria to get eligible for IIT or NIT in JEE mains or JEE advance, they mean that you must score a minimum percentage which is the aggregate marks of all the 3 subjects only, namely Physics, Chemistry and Mathematics (PCM).

Furthermore, The Eligibility criteria for JEE mains states that : He/She should have passed the qualifying exam with Physics, Mathematics, and any one of (Chemistry, Biology, Biotechnology, Technical Vocational Subject).

Students can appear in the JEE Main exam for three consecutive years.

Further, to know more about the JEE Mains Eligibility Criteria in detail and to know more information about the JEE mains exam, you can follow the below mentioned link to know more about it in detail : https://engineering.careers360.com/articles/jee-main-eligibility-criteria#:~:text=Any%20student%20who%20has%20passed,apply%20for%20the%20entrance%20exam.&text=Students%20can%20appear%20in%20the%20JEE%20Main%20exam%20for%20three%20consecutive%20years.

I hope that this will help.

For the JEE MAINS/ADVANCED examination criteria suggests that the student need to have atleast 75% marks in 10+2 aggregate i.e., the student need to score 75% marks atleast for all the 5 subjects.

For more information regarding the JEE ADVANCED eligibility criteria consider the link below:

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

For more information regarding JEE MAINS consider the link below:

https://engineering.careers360.com/exams/jee-main

I hope this helps. Wish you a great day!