Dear leaner,

Ssn in tamilnadu which is accredited by NAAC ,and based on merit list of marks on the qualifying exam , basically 65%seats are filled at single window counselling TNEA

And remaining 310 seats are given under management quota.

25 seats for students who are excel in both academically and sports

25 for toppers of government rural school

Remaining 25 seats are for scholarship student .

Here is the link to predict the rank and cutoff  go through it once .

https://www.careers360.com/colleges/sri-sivasubramaniya-nadar-college-of-engineering-kalavakkam/admission .All the best