BCA

Yes, you can get admission for BCA in Pt. Jawahar Lal Nehru Government College. Please check out the link below for details:
https://www.shiksha.com/it-software/course/bachelor-of-computer-applications-bca-pt-jawahar-lal-nehru-government-college-faridabad-88405

LLB course is a hardcore law course and your BCA will be of no use anywhere. Doing a non-relevant post graduation is always an insult to the graduation you have done.
The most appropriate postgraduation for a BCA candidate will undoubtedly be an MCA. Of course, if you have done BCA seriously and with a proper choice at the time of taking admission to it. If you wish to completely change the field, then you can think of LLB as an option.

Yes, you can. Only your admission will be the process there, rest everything will be the same. I've seen many of my friends changing colleges for BCA and they could do it successfully! Good luck!

Hi,
Yes, you can choose BBA. Many colleges take lateral admission for BBA. First, you have to find out the name of colleges who are taking lateral entry.

Eligibility criteria to seek admission in BCA at Sangam University is that candidate must have a minimum of 50% Aggregate Marks in 10+2 Examination of CBSE or its equivalent of any Board. You are eligible to seek admission in BCA at Sangam University based on you 10+2 subjects. Refer following link for details: http://sangamuniversity.ac.in/Admission-Procedure.php

All courses have their specific requirements. You need to shortlist the country, colleges and the courses you wish to apply for. Then, visit the college website and learn more about the application requirements. With a BCA degree, you can go for courses like MBA, MA, etc.

Yes you can join BCA. As the eligibility to join BCA is at the +2 level.

You may refer to following link for list of top BCA colleges/ universities in India: https://www.shiksha.com/it-software/ranking/top-bca-colleges-in-india/96-2-0-0-0

BCA is best, because it is degree program and professional a course. But, you are not eligible for BCA. In BCA, math is required in 10+2. But, some University gives you admission even without maths. I think degree is better than Diploma. So, it is your choice, you can also go for Diploma. But, there is not much scope. Whereas, after Bachelor's degree, you can go for higher studies. You can pursue MCA (Master computer application) or MBA. This is your choice. All the best.