Aeronautical Engineering

Yes u can get the seat

No, you cannot get admission in IIT as per your score which is too low. Try for another best private colleges.

Aerospace engineers and aeronautical engineers share a lot of common duties. The main difference between these two professions is that aeronautical engineering is a specialisation within aerospace engineering. Workers in aeronautical engineering often work exclusively with aircraft, while aerospace engineers may also work with weapons or spacecraft; and typically earn a higher salary than aeronautical engineers.

Hi Prasanth,
You can use the TNEA 2018 College Predictor option available on shiksha.com. College Predictor helps students to get an idea about the chances of admission in the college of their choice based on TNEA 2018 result.
Please refer the link below for your reference:
https://www.shiksha.com/b-tech/resources/tnea-college-predictor

Yes, there is fee concession for category students but this is followed in only government colleges. You will not get any concession in private colleges.
Good luck.

Top colleges for aeronautical engineering are-
IIT Bombay
IIT Madras
IIT Kharagpur.
IIT Kanpur
IIST Thiruvananthapuram
Madras Institute of Technology, Chennai
Hindustan Institute of Engineering Technology, Chennai
Good luck.

Please check the university website. You must also know the German language.

You can go to the link below to predict the colleges you may get in this rank via CET. As far as I know, chances are not very good. But you can get something via your JEE-Mains rank. I will put the link to that as well.
Best of luck :)
https://www.shiksha.com/b-tech/resources/kcet-college-predictor
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Yes, you can join aeronautical engineering with Diploma with EEE.
Choose a good college and go ahead.

Yes, you will certainly get admission in aeronautical engineering.