IIT

A candidate can give JEE Main exam six times over a period of three consecutive years. In a year, a candidate can appear for JEE Main twice in the months of January and April. If the candidate is appearing for the class 12th board exam in 2020, then he/she can appear in both the sessions of JEE Main in years 2020, 2021 and 2022. Also please go through JEE Eligibility criteria for more details.

Hello Shreya Bajaj, oh no. It's not mandatory to appear for JEE Mains to get admission in engineering branch of aeronautical engineering. JEE Mains is required to be given if you are seeking admission in either NIT or IIT or CFTI. For getting admission in college in your state having this branch then you need to give entrance exam assigned by your state. Of course in a private engineering college, you can seek admission against management quota without giving any entrance exam. Best wishes to you.

Yes, you should qualify JEE, after that you will get IIT. Either you have to look for some best university like BITS, CU MOHALI.