Panjab University

For such detailed information I would advise you to contact the university/college authorities or the college students for precise information.

Remote sensing is used in 2 fields i.e. defense and space science. You can directly serve in Indian army or you can go for ISRO as a junior scientist. You can go abroad for Ph.D and continue research work in the field of space science.

Yes, infact BA with journalism is a good option for journalism. Try some university level e-paper like PU PULSE.

The procedure is different for different university. Most of the processing is online.
Some universities are taking admission by conducting admission test and some of them take admission by counseling process .
The counseling process should depend on your percentage of math in B.Sc.
Good Luck!!

Please refer to the link provided below for details on getting admission in Punjab University. You would be able to select a course of your choice and its mode:
https://www.shiksha.com/university/panjab-university-chandigarh-4026

Yes, you have such options to do 2nd PU through correspondence in Karnataka.

For PU's fee structure please visit www.puchd.ac.in official site. You know about both departments, i.e. UBS and UIAMS.