IIT

You will get the same degree i.e Bachelor's in technology, so choose the branch according to your interests.
All the best.

It doesn't matter much. But you should have a minimum of 75% aggregate in class 12th board examination.

In India, there are a few institutes which provide Bachelors in aeronautical engineering. So, I think you should go for IITs or maybe IISc, Bangalore.

If you have chance, my personal opinion is prepare again if your economic condition supports, because if you don't take risk, you will not get something big. Now, if you take admission in VIT, you have to pay fee for 4 year now. If you prepare from a coaching, you will pay for 1 year and after that

It basically depends upon you category. If you are from general category and Delhi resident then a rank about 1 lakh will get you a branch at least in DTU. Moreover, you should qualify JEE Mains for branch of your choice.

It is very hard, but if you score good marks in JEE Mains next year, you can get admission. You should score around 130 marks because if the paper easy then the cut-off will be around 120 or maybe more. If the paper is difficult, then, you can expect from 90 to 120 marks.

Hello Akanksha,
Yes, why not. You need to work hard and focus more on the exams without any distractions. You need to have a clear planning and so you can crack the GATE exam to get M.Tech admission at IITs or NITs. Try your level best and write the exam. If you couldn't clear, then don't lose hope;

The top 10 engineering colleges except IIT's and NITs are-
1. BITS
2. VIT
3. SRM
4. Manipal
5. Thapar
6. DTU
7. NSIT
8. Amity
9. LPU
10. Sharda