Hello Naresh, 

There are many students who have been studying in various colleges of Engineering in Bangalore and you will not face any language related problem in case of lectures or exams.

Also you'll find many students who are not locally from Karnataka but are from different states of India who came there to study just like you.

The only place where you'll face language barrier if you get out of your college campus and if there is a need to communicate with localites.