Indian Institute of Aeronautical Engineering (IIAE)

Yes, it provides both B.Tech in Aerospace and Aeronautical.

There is Bachelor of Science in chartered aeronautical engineer. It is 4 year programme. Upon completion, the degree is awarded by USA University.

So far my knowledge goes, Aerospace engineering of IIAE Dehradun is one of the best in the country considering all the required parameter. Best wishes.

Hello Deepak,
IIAE-Dehradun offers a unique way of getting a degree in engineering from abroad. Two initial years in India followed by two years abroad is the structure. As AICTE won't accept this, they have tied up with universities abroad for Grant of degree. The fees will get reduced only if less students apply to this Institute. I am attaching a link that will give you all the required information:
http://iiaedehradun.org/wp/

Yes, you can pursue any one of these courses. So, you can apply for admission. I would suggest you do aeronautical engineering.

IIAE has a tie-up with OTHM and UofA, which allows students transfer their credit hence they can easily go abroad for third year or MS.

Yes, you are eligible as Bihar open board school is a recognized education board, candidate passed diploma in Engineering are also eligible.
Shortlisted candidates will have to go for a Telephonic Interview based on the marks obtained in 10+2
Candidates are selected based on the performance in the Telephonic Interview
Details : https://www.shiksha.com/b-tech/course/b-s-in-aerospace-aeronautical-engineering-indian-institute-of-aeronautical-engineering-dehradun-255758

This is a good college and it's not fake. IIAE Dehradun is one of the oldest aeronautical institutes established in 1992 in India and has made many aeronautical engineers who are working in India as well as abroad.
IIAE is approved by the IAO.
Good luck.

Eligibility criteria for aerospace engineering after class 12 is mentioned below:
The candidate should have passed 10+2 examination from CBSE or any other equivalent examination board with physics, chemistry and mathematics as core subjects. The candidates should also fulfill minimum qualifying marks in aggregate of the subjects.
An entrance exam may also be conducted by university for admission to their course. Alternatively, you can also opt to appear for national or state level entrance exam to secure admission in this course.