Law

You are required to complete your graduation with at least 40% marks from a recognized university to pursue LLB course. The candidates who have completed their post-graduation will get a weightage of 2%. Many of the colleges conduct entrance exams followed by a personal interview to select eligible candidates for this course. The exam pattern includes Legal Reasoning, Language Ability, General Science, Aptitude of Learning, Social Studies, and General Knowledge. The maximum age limit for pursuing the course is 30 years.

You can practice law and you can also get jobs as a legal advisor in any firm. You can also get work as a law officer in Army, Navy or Air Force.

Yes, you can LLB after completing PG.

Yes, you can do LLB along with M.Com in distance mode or M.Com along with LLB in distance mode.

Here you need to specify what you mean by BBM. Is it B.Sc. and Business Management London. If this is so then you need not do Law. If by BBM you mean something else then kindly elaborate that to enable Experts to give a good advice.

No Mardan, as far as I know, NMIMS School of Law considers only CLAT.

I am not sure, what in specific you would like to know.
Nonetheless, LLB is a post-graduation degree of 3 years in Law.
Most universities/law colleges provide this degree. The entrance exam varies.
For admission in Maharashtra, MHT CET is mandatory. Stay tuned for forms from February onwards.