Kolkata

Yes, you are eligible for this college.
For details visit: https://www.shiksha.com/science/course/b-sc-hons-in-physics-st-xavier-s-college-park-street-kolkata-83768.

To apply for airport job you need to apply on Airports Authority of India career page. All the airports in India are owned by them and they have the authority to generate and induct people on jobs with them. Science Graduates can find the best place as Air Traffic Controllers on airports. There are other jobs which also require graduation, irrespective of the stream. You may look at the career page and apply as per your eligibility. Locations are throughout the network although primarily you may get located at Kolkata.

Kindly visit this link:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjAu47I1_3bAhWHsY8KHZKxCSQQFjAAegQIARAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

The universities offering B.Ed are:-Annamalai University
Madurai Kamaraj University
Jamia Millia Islamia
Kurukshetra University
Kakatiya University.

Yes, you can pursue a distance course. Please refer to the list of colleges below:
https://goo.gl/A7r2UV

Given below link is the comparison between both the courses and college:-
https://www.shiksha.com/resources/college-comparison-25169-112802.
Good luck.

Hi there,
The annual fee for the course is around INR 70,000. Also, for 5 years, the fee structure would be around INR 4,50,000.

Hello Kunal,
It's nice to hear that you want to go to IIM, Kolkata but the eligibility there is graduation. You need to complete your graduation first and then only can get admission there. There is no lateral entry for admission in IIM, Kolkata.