dear anoop sabu

you can do internships with or without payments which are available in online markets you can do  by doing btech programme also

hope in good way 

all the best and thank you

Hey Anoop.
An internship is supposed to be a practical experience gaining program in the field in which you are studying currently. Doing an internship in other fields defeats the purpose of it. You can look for internships which would accept any current B.Tech students. But in my opinion this wont be possible because companies would not hire interns who do not have any knowledge about finane or other branches in MBA.
All the best.