Dera Dhruv,

There is no free seat in SVNIT Surat as such. SC/ST students are exempted to pay the tuition fees and there is a fee waiver for economically backword students.

To check the complete fee structure you can refer below link

http://www.svnit.ac.in/Data/admission/2017-18/B.Tech..pdf

In order to get admission in SVNIT Surat you should have 75% marks in your boards exam or you should be in top 20 percentile in your board exam in general category and 65% for SC and ST. 

There is no weightage of your 12th class in your JEE Main result.

According, to previous year you should score more then 165 marks in JEE Main to get admission in this college in general category other state quota.

Cut off marks varies as per the branches as well.

Good Luck!!