Exam

Yes, you can do MBA with a good college. You can compensate for your low academic score with certain exceptional entrances score in the MBA exams like CAT, XAT, IIFT, SNAP, etc. and also with an confident and impressive interview. Many colleges consider overall academics while admitting students in their college but their are many colleges who take the students with low academics well. For getting admission, you should have a decent percentile in the Common Admission Test (CAT). You can target FMS as they don't have a lot of weightage for academics but for CAT score and your profile. Please focus on your undergraduation marks too and do a lot of Internships to improve your profile and hence increase the chances of getting a call. Build your profile and acquire many skills which might land you get admission in a good college for your betterment.

Hi Sagnik! You're rank is really good, Here's the list of some best books for you surely will helps you in your preparation. Mathematics:
-NCERT Class XI and XII books. -Higher Algebra by Hall and Knight. -Differential and Integral Calculus by N. Piskunov. Trigonometry by S. L Loney. -Coordinate Geometry by S. L Loney. Physics:
-NCERT Class XI and XII books. -Concepts of Physics by H. C. Verma. -Fundamentals of Physics by Halliday, Resnick and Walker. -Problems in General Physics by I. E. Irodov. -Aptitude Test problems in Physics by S. Krotov. Chemistry:
-NCERT Class XI and XII books. -Numerical Chemistry by P. Bahadur. -Concise Inorganic Chemistry by J. D. Lee. -Organic Chemistry by Morrison and Boyd. Chemistry Principles & Applications by Slenko and Plane. -University Chemistry by Bruce Mahan for Physical Chemistry. In order to these books you can write number of mock tests, then definitely you can crack. Hope it helps you. !
Best of luck!

I can guide you about Physics important chapters for JEE Advanced.
1. Oscillations and Waves. (Oscillations more important)
2. Rotational Motion and centre of mass. ( Angular momentum extra)
3. Electrostatics
4. Current electricity
5. Magnetism
If you have done B.Sc. Than your concepts will be better and also your ability to use mathematics in Physics will be more. Start by solving previous year questions of JEE Mains and JEE Advanced. SEE the solutions and solve all questions. Spend atleast 3 months in this. But not more than that. By now you will know your weak and strong area. Give one full reading to standard Physics textbook like sl Arora. Purchase one assignment book like dc pandey series. Solve it completely. Once you start solving this book. Make a habit of giving one test every week. Online test. You can give full JEE test every week even if your syllabus is not complete. Just give test and don't worry about marks. This will help you in managing time in exam. Solve entire assignment book. Now try to look for any gaps. If you feel some topics are weak. Only focus on those. Revise same book more. Than solving too many books. Anf always try to solve question by yourself first and than SEE the solution.