India

Yes, but make sure that you are doing it from a reputed institute.

Check the below link for colleges in Chandigarh and Delhi-
https://www.shiksha.com/b-tech/colleges/b-tech-colleges-chandigarh?rf=filters&ts=2992520&ct[]=10223&ct[]=63&ed[]=et_20&uaf[]=et_dm&uaf[]=location

Hello Roshan,
If we see dictionary, meaning becomes clear. Aerospace is the industry of aeronautics. However, in India both are intermingled and used whatever way. So just ignore & consider both as one.
In India presently, the requirements of professionals of this branch is quite less but I'd expected to increase in years to come. It is expected to be good four years from today.

You may refer to this list of top engineering colleges in the state of Andhra Pradesh: https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-andhra-pradesh/44-2-100-0-0

Hi Roshan,
Karnataka is not very much known for its mechanical engineering branch, but still, some of the best in its class colleges are RVCE, MVIT, MS Ramaiah, BIT, etc.
All the best.

Hi Venmathi,
There is no reputed college in India which consider boards marks, since boards marks is also not considerable from this marks. So, JEE is also not very much beneficial for you, if you don't get more than 150 marks. But, as you said, you are searching colleges in Bangalore, Pune and Tamil Nadu, you may apply for exams like COMEDK, MHCET, and some private universities like VIT and SRM. Some of the good colleges in these areas are COEP, VJTI,MIT RVCE, MS RAMIAH, BIT, NIE, VIT VELLORE and SRM.
All the best.