I believe being from OBC Category and studying at a National Institute like IIIT Surat, the institute will have some Merit cum Means scholarship scheme at par with Other IITs, NITs and IIITs. It is by far the best, most consistent and easily available scholarship scheme.

Besides this you can check information regarding Government Scholarships like MCM on the National Scholarship Portal. For more information do follow the link below

https://school.careers360.com/articles/national-scholarship-portal