Dear Student,

Yes, you have chances based on previous year cut off.

JEE Main 2018 cut off depends on many factors like number of students appeared for the exam, difficulty level of the exam and cut off trend.

You can check below expected cut off as per coaching institutes for SC category

Sri Chaitanya- SC - >=30

Resonance- SC - 28

Motion IIT- SC - 38 - 42

To check the previous year cut off trend you can refer below link

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

Good Luck!!