Germany

It depends upon what hits you the most from the following points:
1. Interested in projects related to your field or want to do research on any part of your field? - Go for MS
2. You have a great knowledge about your field and you are in no mood to get deep into your studies , just want to earn well? - Go for M.tech
3. You are a leader and you feel like to have your own business some day or be a CEO to one of topmost firm ? - Go for MBA but not from any university located in germany.
Hope this helps. All the best.

You should visit the official website of GMAT as well as other foreign university websites.

Germany is good for businesses management but not so good that you should go their leaving your country to study. You should rather look for some other option.

Dear Nithees,
It'll definitely be good, but you have to learn German language there and enrol in a school for 1 year.

Give GRE and apply in the university as soon as possible.

No, you just need to score good in Bachelors and German proficiency is required.

Yes, you can give IELTS only. Almost all the universities in Germany ask for IELTS. It is European based and TOEFL is American based.

You should go for Poland.

Germany is a technology advance country with lots of high technology industries. If you do MS in Germany, you have high probability to get a good job in Germany.