CBSE 12th

Hi,
Kindly, visit their website and eligibility criteria. As your 12th combination of subjects will not be retained in your proposed study, you may have to face disadvantage of 2.5% or more from the percentage obtained in 12th and have to face the competition for ranking for selection.

Yes, you have to enter the previous year's roll number and marks and then there is a section of appearing for improvement, at that place you have to mark yes.

Hi,
You can appear for it but the form filling date for JEE Mains is over and from next year you are not eligible for the same. But, if you have filled the form then you can get your admit card and appear for the exams.

The chances of getting admission also depend on the GD/PI and the percentage and extra curricular achievements.
All things effect the chances of getting admission.
For fee and other details and for more information, refer brochure:-
https://www.somaiya.edu/media/pdf/PGDM_Admissions_Brochure_2017-19.pdf .
FAQs:-
https://www.somaiya.edu/media/pdf/FAQ_2017-19.pdf

Do 12th with science PCM + Computer Science. You can choose integrated program B.Tech+LLB. I think you can achieve both.

Revise all lessons key points without looking any notes or text but by locking it deep in your mind. Don't forget to revise all important derivations, optical instruments, galvanometer, cyclotron, etc. and why should be thorough with all formula.

Both options are good in their respective ways. It depends on you that in which field you are interested in.
Choose the one in which you have much interest.

You can refer this link:
https://www.shiksha.com/careers

You can apply for colleges like:
1. Jaipuria.
2. BIMM.
3. Alliance.
4. ITM – Mumbai.
5. Christ.

Hi,
If you plan to do something in sports like BA or B.Sc, you have the benefit. Otherwise, it's taken in 12th to manage the heavy combinations of PCM or PCB.