Hello

For admission to B.Tech courses in IIT, engineering aspirants have to clear the JEE Advanced exam.

To qualify for the JEE Advanced exam, students have to first qualify the JEE Main exam.

Now, the eligibility criteria  is as follows-

Candidate should have scored at least 75% aggregate marks in 12th standard (or equivalent) examination. For SC/ST/PwD, the aggregate marks should be at least 65% or candidates should be within the top 20 percentile (category-wise) of successful candidates in their respective 12th standard (or equivalent) board examination.

Check the detailed eligibility criteria using the link below

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

Good Luck!