IIT

No, that's not right there are also many aerospace engineering college who give best placement in this branch.
Hindustan University, Chennai
Punjab Engineering College, Chandigarh
Park College of Engineering and Technology Coimbatore
University College Of Engineering, Rajasthan Technical University, Kota
these also has best placement record in Aerospace Engineering.

Definitely, it's LIT-Nagpur. But the only problem is temperature. I knew that I won't be able to bare that atmosphere and temperature. So, I took admission in VIT, Pune. And in terms of placements, LIT-Nagpur is quite good as compared to VIT.

No, IITs and NITs don't accept UPSEE, but you should go for. LPU or Amity. They accept UPSEE scores.

IITs have a great faculty and you can definitely pursue your masters in aeronautical engineering from IITs. But, if you can afford studying in abroad, you can also go for it.

First of all if you are general then you are not eligible for IITs NITs or GFTIs as they need 75% marks minimum but if you are ST, SC then there is a chance if your JEE main marks is good.
then you get scholarship on your fee structure by IIT.

Yes, you can go for a free ship scholarship under economic criteria in any institute in India.

Hello Ship,
No, you cannot take admission in any IIT's or IIEST via WBJEE, via WBJEE you can get state funded government colleges of West Bengal like Jadavpur university, Kalyani, etc.

Please read the JoSAA business rules. You have to take all the original certificates of your academic and caste. There are some certificate formats available at the JoSAA notification PDF file in the end. That you have to take the printout and take necessary action given there. Plus medical format is also given there. Download and go to a doctor take a fitness certificate.

The minimum 45% marks require in +2 for admission in engineering.

If you want to good job then improve your communication skills first and as per your profile, operations or production management is the best suitable for you.