M.Sc

M.Sc. Courses & Fees at F.S College Of Education, Shikohabad, Firozabad for 2022. Find Fee Structure, Course Duration.
refer link: https://www.shiksha.com/college/f-s-college-of-education-shikohabad-firozabad-127663/courses/msc-bc

Hello PL Bhavani, I am attaching a link that will give you all the required information. https://www.shiksha.com/college/aurora-s-engineering-college-nalgonda-19551
Best wishes to you.

M.Sc. in marketing is a better choice.

M.Sc. Courses & Fees at Khalsa College Amritsar for 2022. Find Fee Structure, Course Duration, Reviews, Cutoff, Eligibility & Exams.
refer link: https://www.shiksha.com/college/khalsa-college-amritsar-25386/courses/msc-bc

B.Sc. Science graduates with Biotechnology, Microbiology, Botany, Zoology and Life Sciences as one of the optional subjects. Refer link: https://www.shiksha.com/college/osmanabad-sub-centre-dr-babasaheb-ambedkar-marathwada-university-180263/course-m-sc-in-biotechnology-885741.

M.Sc. Courses & Fees at Government City College, Hyderabad for 2022. Find Fee Structure, Course Duration, Reviews, Cutoff, Eligibility & Exams. Refer link: https://www.shiksha.com/college/government-city-college-afzalgunj-hyderabad-13584/courses/msc-bc.

Career Prospects in Pharmacology
Academic researcher. Analytical chemist. Biomedical scientist. Community pharmacist. Clinical research associates. Clinical trial monitors. Clinical study coordinators.

Candidate must have passed Bachelors degree with Chemistry as one of the subjects and secured minimum of 60% marks for GEN/GEN-EWS/OBC or 6.5 CGPA.
Refer link: https://www.shiksha.com/college/national-institute-of-technology-agartala-35298/course-m-sc-in-chemistry-166108

As Physics and environmental studies are kind of different subjects:-
I think it is not possible ( Try asking your professors they might help )
1) M.Sc. Or M.Phil in environmental Science and other related fields. Those with M.Phil qualifications need not attend the entrance test but other postgraduates have to appear for both entrance as well as interview. It takes a minimum of 3-5 years to complete the programme.
2) candidates should have passed M.Phil. Degree and a Post-Graduate degree in a relevant discipline with a minimum of 55% marks or an equivalent grade from a University or a recognized institution of higher training.