M.Sc

You will need some work experience, they welcome students with various background however without any experience it will be difficult to get Into. Having solid work experience. Will also help you understand your career plans and additionally you can demonstrate your contribution to the class in some way. A very good GMAT score will also be required.

Best colleges for M.Sc. At microbiology in India are following:-
1. St. Xaviers College Mumbai
2. IIT Jaipur
3. MIT
4. Fergusson college Pune
5. St. xavier College Kolkata
6. University of Lucknow
7. Barkatullah University, Bhopal
8. Lady Brabourne college, Kolkata
9. The Oxford college of Science Bangalore.

I would like to suggest you to go for that field in which you have more interest, because after taking admission if you will not take interest in your papers, then it can be hectic for you and your future as well. As per your concern, I would like to let you know that there is a huge demand for Engineers as well as the nurse in India. So, you don't have to worry about your future. You just study well, and success will come after you.

You can also choose Germany. In Germany, there any lots of Institute which gives free education.

As per eligiblity you should have
- PCMB in (10+2) and B.Sc. (chemistry) as mandatory course in graduation. - (10+2) % should be 60% and 50% in graduation.

Yes, you are eligible for the course.

There are only two college in India that are providing M.Sc (e-commerce and Web designing) first one is Periyar University, and second One is Vinayaka Mission's Research Foundation - VMRF.

Lehninger principles of biochemistry - Albert L. Lehninger
Bioinformatics: sequence and genome analysis David W. mount
Biotechnology by Satyanarayana
Molecular biology of the cell by Bruce alberts.