M.Sc

Yes, of course, it is a better option for that. You can also look for New Zealand, Canada, Australia, etc.

The best colleges for M.Sc in Bangalore are:
1) PES University-fee 1.6L
2) Mount Carmel College-90K
3) Christ University-77K
4) Oxford Group-40K
5) IISC-18K
6) Garden City University-1.7 Lakhs

Thoroughly revise your Physics books of B.Sc. And also solve online entrance exam papers of previous years for practice. This will help you to go through M.Sc. Physics entrance exam.

Please refer to the link provided below for a detailed list of colleges which accept IIT JAM 2018 scores/ranks for admission. You can select college (s) from this list where you would feel comfortable pursuing M.Sc. in chemistry. Regards. https://www.shiksha.com/science/articles/colleges-accepting-iit-jam-scores-ranks-for-admission-blogId-13971.

Admission are made through counseling on the basis of rank obtained in MHTCET. MHT CET 2018 entrance exam will be conducted on May 10 in offline mode. Declaration of Results/ Marks- On or before June 3, 2018. Counseling will begin once results have been declared. Regards.

M.Sc Applied Microbiology:Top 10 Institutions are mentioned below:
1) Lovely Professional University
2) Amity University, Jaipur
3) Maharishi Markandeshwar University, Mullana
4) SRM Institute of Science and Technology
5) Chandigarh University
6) Savitribai Phule Pune University
7) Punjab University
8) Chaudhary Charan Singh University
9) VIT University, Vellore
10) Gujarat University
Regards.

No, you cannot apply for M.Sc psychology with your B.Sc zoology degree. For applying in Osmania University College for Women you need to have passed B.Sc. (Zoology) with minimum 40% marks.

Check out the link for complete course offers by CU Rajasthan.
https://www.shiksha.com/university/central-university-of-rajasthan-ajmer-32767/courses