Germany

when you are looking for Abroad studies you have to look things in the Global perspective. only in India and also in USA the govt does not have control over educational institutions. Germany has very good system and they offer free education for students has more than 80% marks. You first few nd put weather you are eligible for admission and try to get admission. Don't try to find out which is good and bad. unlike India most of the countries can not recruit foreign students unless the institution is recognised by the Govt.

MBA is management degree. Without experience you can not expect a management job in Germany. You don't have Mtech in Germany. it is all specialised courses. See the list courses and then decide

Yes you can. Mechanical Engineering students are eligible to take up such courses. If you need admission in Germany you require 80% marks and you have to masters for two years. instead you can do in UK which is one year masters.

Aerospace engineering is a sub field of mechanical engineering. That said Germany is the best place to study mechanical engineering.

Hi
if you wish to apply for bachelor's, 80% above grades and IELTS is the requirement. Few universities may hv additional criteria so you need to be specific in your course/ college choice.

Hi
There are around 200+ universities in Germany and masters diversifies to many branches in say physics or chemistry.

Germany is a mecca for research. I hope this answers it all.