Hello Ramdeep,

The eligibility criteria for AME CET is as follows-

• Candidate must have either passed 10+2 PCM or is appearing in 2020 with PCM stream or 3 years engineering diploma in any stream or equivalent from any recognised University/ Board.
• The number of attempts which a candidate can avail at AME CET shall be limited to 03 (three)
• Candidate age must be between 16 to 28 years at the time of admission

Best colleges for btech aerospace engineering are-

• IIT Madras
• IIT Kharagpur
• IIT Kanpur
• Madras Institute of Technology, Chennai
• School of Aviation Science and Technology, Delhi
• Nehru College of Aeronautical and applied science, Coimbatore.

I hope it helps and best of luck

Thank you