The admission in Thapar University for Btech is given on the basis of JEE Main score and at least 60% marks in 12th standard. On the basis of JEE Main score and percentage of 12th standard Thapar University makes a merit list and admissions are given according to that. For more information, you can refer to the link down below.

https://engineering.careers360.com/articles/tiet-btech-admission