German

For admission in the above-mentioned course, you need to have done graduation with 50% and candidate need to have proficiency in German.

No, for Masters degree in German you should have German in your graduation.

Hello Rizwan,
It is very heartening to know that you are interested in doing your MS in Germany after completion of your engineering graduation in India. These days many students are heading to universities / institutions abroad for their PG. But a word of caution. There are many nuances before one gets admission. Hence I would recommend that you should approach an agency dealing with sending students abroad for MS and particularly to Germany. It will help you in overcoming all these nuances and make your path easier. Best wishes to you.

Technical University of Munich, Germany. It is one of the best university college for nanotechnology engineering. It has world ranking 44.

It takes round about 10 to 12 months, if you study it intensively.

Hello Prasad,
Backlogs is the bane of many Indian students. Normally speaking students with backlogs have less chance of getting admission in an institute abroad. This is so since there are plenty if students with excellent academic records knocking at the doors for admission. But it is no bar. Many students with backlogs have indeed obtained admission. I would therefore advise you to approach an agency dealing with sending students abroad or specifically to Germany. There are many nuances in the process & only specialised agencies are aware of it.
Best wishes.