Mechanical Engineering

First you need to check university's website. In India we have 12 years of studying experience but in Germany they ask for 13 years' experience. Now you have three options:
1. Pass JEE Mains and Advance
2. Spend 1 year in a college in India
3. Go for Studienkolleg in Technical University of Berlin
You need to prove your knowledge of German by passing Testdaf exam with good points. If you have fulfilled the criteria then apply via university assist.

First you need to check university's website. In India we have 12 years of studying experience but in Germany they ask for 13 years' experience. Now you have three options:
1. Pass JEE Mains and Advance
2. Spend 1 year in a college in India
3. Go for Studienkolleg in Technical University of Berlin
You need to prove your knowledge of German by passing Testdaf exam with good points. If you have fulfilled the criteria then apply via university assist.

In Technical University of Berlin, BE in mechanical engineering is taught in German but in the 4th year some courses may be taught in English. You need to prove that you are good at German by passing German language test, e.g., Testdaf of any other.

There is no college which offers part time Diploma in mechanical engineering but you can pursue skill development courses.

Yes, you can get the admission. You can even get a direct admission through the entrance exam.

Hello,
Kindly visit this link:
https://www.shiksha.com/college/m-s-ramaiah-polytechnic-s-r-nagar-bangalore-19262
https://www.shiksha.com/college/ramaiah-institute-of-technology-m-s-r-nagar-bangalore-474/admission

Hello,
I am mentioning a link given below, please visit:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjGue-Wh_vbAhUK6Y8KHVA9D1kQFjAAegQIAxAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

Hello
Here I mention a link given below please visit on it
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjGue-Wh_vbAhUK6Y8KHVA9D1kQFjAAegQIAxAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

Yes ,you can do mechanical engineering then aerospace engineering, aerospace engineering is a part of mechanical engineering

Yes, you can. But, in the last round of the counselling as these private colleges wants to take maximum number of admission on the management quota, so that they can demand more from the last coming students, but in the last, when no one is there then they show their vacant seats in the counselling board.