Yes, you  need to take the entrance exam to get into Symbiosis College of Arts and Commerce (SCAC) for a BA in Psychology. For admission to the School of Liberal Arts and Sciences (SLAS), which includes Psychology, you need to take the SET General paper.

The admission process for Symbiosis is entirely online. You can find the application portal and detailed instructions on the official Symbiosis International (SIU) website

1. Register on the SIU website.
   
   
2. Fill out the online application form. Be sure to enter accurate information and choose "BA in Psychology" (or the specific program name) under SLAS.
   
   
3. Upload required documents: These might include scanned copies of your mark sheets, certificates, photographs, and any other documents specified.
   
   
4. Pay the application fee online.
   
   
5. Schedule and appear for the SET exam. You can find exam dates and registration details on the SIU website.

https://www.careers360.com/colleges/thapar-school-of-liberal-arts-and-sciences-patiala

I hope it helps!