Hello there,
B.Tech in Aeronautical Engineering is a very good course. Here are some colleges where you can apply:
1. Rajasthan Technical University, Kota
2. Madras Institute of Technology, Chennai
3. Jawaharlal Nehru Technological University, Kakinada
4. Manipal Institute of Technology,Manipal
5. Dayananda Sagar College of Engineering, Bangalore

These are some colleges which offer this course. JEE Main is a national level entrance exam accepted by all colleges. Apart from this, you can appear for state level and University level entrance exams. This depends on which college you want to choose.

You can check the link given below to know more about the colleges offering this course:
https://engineering.careers360.com/colleges/list-of-be-btech-in-aeronautical-engineering-colleges-in-india

Hope this answer helps you.
Good luck!!