M.Tech

Hello,
This is quite not possible to say, surely that you can earn 1 lakh per month as salary after completing your M.Tech as there are a big crowd are waiting for engineer so it's tough to get this much salary. Yes, it's possible if you have done your M.Tech from reputed college and with good marks.

CSE is better as it provides good scope and salary packages than mechanical engineering.

Yes, there are various colleges in which you can apply for M.Tech without GATE qualification or something like that. I can give you some names like Vivekananda Global University, JECRC University, etc. from Jaipur.

Hello,
Kindly check this link for a list of colleges:
https://www.shiksha.com/engineering/colleges/m-tech-electrical-engineering-colleges-tamil-nadu
For admission process of any college, click on the college name to get complete details about that particular college.

Go for PG if it is feasible for you. As on completion of your M.Tech the kind of career you shall be starting would be quite rewarding. Also, it will keep you away from the crowd of BE. You will find yourself in far more better position.

Hi,
Following are the colleges for M.Tech in construction management in Mumbai:
1) Indian Institute of Technology Bombay
2) Sardar Patel College of Engineering
3) Veermata Jijabai Technological Institute
4) NMIMS Mumbai

Both the options are good but only when you pursue it from reputed institutes like IITs or IIMs. Also, it depends on your career goals whether you want to start your career in engineering or management field. After pursuing MBA, your career line will change. The best option is to go for job first and then Executive MBA, so that you can get growth in your career.