Bachelors

For BUMS, people with knowledge of Urdu language is preferred. If you really want to be a doctor and set your own clinic then go ahead.

Yes, it is a graduation course.

You can follow this link: https://www.shiksha.com/medicine-health-sciences/physiotherapy/colleges/colleges-dehradun

Hi, Yes you can, however, different universities would be having different admission requirements. It also depends on where you plan to study. For example, to study in the USA you must take the SAT and TOEFL.

Yes, if you want to get a good college like IITs, NITs, etc.

Jobs directly related to your degree include:
Aerospace engineer.
Automotive engineer.
Contracting civil engineer.
Control and instrumentation engineer.
Maintenance engineer.
Mechanical engineer.
Nuclear engineer.
and
Do CAE courses. It has a lot of scope. Choose a CAE course based on the area of your interest.For example: If you are interested in thermal do CFD and if you are interested in motions do ADAMS. Hypermesh, Ls-Dynaalso has a great scope.

Private colleges - BITS, VIT, SRM
Then there are colleges coming under industries. DTU has many good colleges too. Govt colleges IITs and NITs are the best. Also, if you've given the KVPY, there's the IISC. All of these are the best in India.