Pune

Yes, you can switch internally provided that the college has permission for the same.

The center for post graduate legal studies at the Jindal Global Law School offers the one year Master of law (LLM) in business or corporate law. Symbiosis is also a great option as it is a renowned institution.

Hyderabad is better option than Pune in following ways-
1. Cost of living is less as Pune is very costly.
2. Food is very good and is a necessary requirement.
3. Technically better than Pune and has more opportunities.
4. Being close to Bangalore and Chennai, it provides you better chance of a job.
5. Mo

Mechanical engineering is a better option.

Please refer to http://joinindianarmy.nic.in/how-to-join.htm
You can try for 10+2 Technical Entry scheme.
Age - 16-19 Years
Qualifications - 10+2 (70% marks with PCM)
College of Military Engineering is a premier technical and tactical training institution of the Indian Army Corps of Engineers which incl

1. University of Mumbai.
2. ITM - Institute of Health Sciences.
3. Mahatma Gandhi University – Mumbai.
4. MGM University of Health Sciences.

Although, transfers in the same university transfers do happen but it is not a very common scenario in India. Moreover, you need to get a transfer certificate from the college which at times very difficult to get, so I would suggest you talk to your college officials and if they agree to give you TC