Dear Aditya,

There are many colleges in which you can take admission on the basis of class 12th.

You can apply in these colleges through TNEA, REAP, MP BE, Punjab B.Tech and Sastra university.

To know in detail you can refer below link

https://engineering.careers360.com/articles/btech-admissions-on-basis-of-class-12th

Good Luck!!