CBSE 12th

For getting IIM call you should have a decent percentage in your academics. Atleast above 75 percentile. But sometimes you will get a call according to your percentile in CAT exam as it all depends various IIM. You can even get a call if you have 55% above in all academics.

Yes, it is possible, First you need to crack CAT exam then according to your percentile you will get a call from different B-school and of course for IIMs you need above 93-94 %ile because you belong to OBC category. Otherwise for non-reservation category you need above 97-99 %ile.

All branches of engineering are equally good with respect to scope & opportunities if you do engineering degree from a good college. You must choose your branch of engineering based on your area of interest to excel in professional career.

Start preparing for IIT, there are also some top rated private colleges too. But I will suggest you to take a step forward, clear your mathematics, prepare for IIT, this will make your basics stronger then you will succeed in your field wherever you will study.

A large number of students appearing in NIFT entrance exams are in same boat as you. You are advised to prepare for NIFT entrance exams along with your 12th studies and appear for entrance exams. It is an extra effort but an worth effort. All the best!

Hi,
You are eligible for CCNA and certification. To do so you need to take proper training from a good institute or Networking expert. However, I would suggest if possible then continue your higher studies to get a better place in IT job market.

You are eligible for PG. You may opt for MSW, MBA, PGDCA, M.Com, MA, etc.

If you want to go with biology and maths in your career particularly on those two subjects then you can go for B.Sc, and then you are capable to pursue higher studies.