LLB

Hi Deepak,
BA LLB is itself a graduation course. After 12th it is a 5 years program and after graduation it will be 3 years program. So, it always good to pursue BA + LLB or BBA + LLB or integrated LLB to save 1 year.

Both, pharmacy and law are diverse profession. You will be able to use both field's knowledge if you want to be a specialist in drug and Pharma or want to be an IPR lawyer. Law is a very good profession with opportunities as corporate lawyer, law KPO or independent consultancy and practice.

You need to pass class 12th exams with at least 60% marks and you need to fill the form of CLAT, LSAT, GGSIPU law entrance exam before January. You need to prepare yourself from right now for the law exams, so you can excel your potential in the exams.
Best of luck.

Yes, you can pursue LLB after completing your B.Tech however, it is not advisable since you have already gained specialization in engineering background. It will be entirely a field change however, on the other side it could help you depending upon how you use your knowledge in engineering and legal together as a professional. You might be able to get a job in legal department of an engineering company. So, it is advised to think for some time before going for LLB.
After graduation it will be 3 years program and be sure to pursue it from BCI approved university.

Both options of five year integrated law degrees are equally good. If you are targeting to become a corporate lawyer then BBA is a better option.

not possible, u need bl /llb for ml/llm

Mohit, there is not such thing as degree through correspondence but regular kind. It would be specified on your degree or the name of the institute will state that it is a correspondence degree.
Better would be go for regular one. Entrance tests like CLAT/ LSAT etc are over. So, try for admission in institutes where admission is possible on basis of both I.e. CLAT/ LSAT as well as without it.
Law schools that offer admission through CLAT/ LSAT as well as previous qualifying exam are
Lovely Professional University, Phagwara
Amity University, Noida
G D Goenka University, Gurgaon.
Check their websites for more details.
Good luck.