West Bengal

The best institute to take admission is Satyajit Ray Film & Television Institute.

Chances to get job of Rs 12 Lakhs per annum are low because of down sizing in IT companies. Very low percentage of CSE students get salary above 12 Lakh per annum. Study well, money will chase you.

I hope, this will help you.
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://career.webindia123.com/career/dates_and_events/entrance/medi/national-institute-of-homoeopathy-bhms-admissions.htm&ved=0ahUKEwie0t7o-8TVAhUGYo8KHXvWBzsQFgiyAjAb&usg=AFQjCNHi0LEVRCvmbViwAvcvDuXezwqk4w

Dear Suman,
Not just in India, but in the entire world, you can never do engineering and medical through distance mode. So don't ask for B.Tech college in distance mode in Kolkata as you will not find and even if any college offers B.Tech in correspondence, means they are violating the rules of AICT

You have a lot of options left with you as you have done you Masters. If you are very much interested in academics, then Ph.D is the obvious choice for you after completion of your M.Tech.
If not, then there are number of corporate giants that seek M.Tech pass outs as they want to hire subject matter

The eligibility for MBA is graduation. However, you've completed BCA so you're eligible to pursue MBA.

You can get in many private engineering colleges which have their own set of criteria for admission. I would suggest you for UEM Kolkata and to know more about the college visit here:
https://www.shiksha.com/university/university-of-engineering-and-management-kolkata-47398