CBSE 12th

If your CAT/XAT scores meet our minimum requirements (75%+ in all sections and 85%+ overall) then we can accept your scores in case you've already registered for PGDM admissions 2017 by 16th December 2016.
Further, for the graduation and higher secondary scores, we don't have any specific cutoff. A decent profile is what SPJIMR looks for in a candidate.
For more details, you can visit:
https://www.spjimr.org/pgdm/admissions/india or drop in a mail to pgdm.admissions2017@spjimr.org.

The chances of getting an interview call is less.

No, there are no cut-offs as such, but they do take into consideration 10th/12th marks while shortlisting people based on their CVs.

Hi,
Undergraduate degree in physics is the obvious choice, though astronomy and astrophysics courses will be taught in your bachelors you should target for more specialized Master's in this subject and as also a Ph.D. for better prospects. Abroad is a wide term, you should specify your country choice for college options.

No. The CAT cut-off last year was 97.5%ile.

You have fair chances of getting through. So, I would suggest you to apply and prepare well for GD. Don't hesitate to ask if you have anymore queries.

Understand the basics of chemistry.Always try to relate each and every equations.Find how the final product is obtained.Try to study OC by writing, no reading helps you.

If you want to get jobs in MNCs you should take BBA and then MBA. BBA only leads to MBA but on the other hand B.Sc will lead to many other degrees.