Hey Aspirant, Hope you're doing great!

You need to secure a rank around 3000 or less if you belong to home state inorder to get seat in NIT Sinchar for Computer Science Engineering branch for SC category or if you belong to other state state you need to score a rank around 2000 for Computer Science Engineering branch for SC category so to say in terms of marks so, as you belong to SC category inorder to get a rank around 2000 you need to secure atleast 110+ marks.

Visit the below mentioned link to know about the cutoff trends of NIT silchar

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

Best of luck to you. Hope you get admission in your dream institute!