Hi Harshita

This can differ every year but for an SC candidate you just require around 50 marks to qualify mains and for advance you require around 18 to 20 percent of marks so that you can get into iit

Hope this helps

Hello!

Anything more than 45% of total score is sufficient to get a good branch (maybe CSE) in an old IIT for an SC candidate.

I have seen SC people with AIR ~4000 getting CSE in IIT Bombay.

Cut-off for JEE Advanced 2016 was -

General category : 100

Other Backward Classes (OBC-NCL) : 70

Scheduled Caste (SC) : 52

Scheduled Tribe (ST) : 48

All the best!

Hope this helps!