B.Tech

For which college are you basically asking for? Have you appeared for any exam?

It depends. If you have interest in engineering then go for B.Tech+MBA. If you don't have any interest in science and engineering then opting the 1st option is a waste and you should opt BBA+MBA. Nothing is above or below. Your interest, skills and marks matter the most.
Good luck.

You cannot apply directly for B.Tech after your 10th. Either you should have completed your class 12th Science or Diploma in Mechanical or Automobile Engineering with required marks to get into a college for B.Tech in Automobile Engineering.

Yes, if you are planning to get a job in the government sector.

I am also pursuing B.Tech in Electrical Engineering. You should choose hostel first if your hostel provides better facilities like 24*7 electricity and water, better lodging and mess facility. In hostel, you get to learn a lot of things like discipline. You can get helps from seniors if you have any