While the cutoff marks is around 40, scoring 120+ marks in Jee Advanced will ensure your seat in a good IIT. You must aim for a rank below 500 ( <100 for Cse ) to get your desired branch in topmost colleges like IIT Bomba, IIT Delhi, IIT Kharagpur,etc.

Good Luck !

Hello,

Marks more than 45% of total score is enough to get a good branch (like CSE, ECE ,IT) in top IITs for SC candidate.

For cutoff of all IITs visit the mentioned link:

https://engineering.careers360.com/articles/jee-advanced-cutoff

Hope this helps

All the best!!