Hi swarna,
M.S.C pharmacology is a 2 year program and the eligibility is an MBBS or BDS with an 55% of CGPA, or you should have a degree in B.V.S.C, B.Pharm, Or other B.S.C course or in Bachelor of physiotherapy with a minimum mark of 60% and above.
The careers after M.S.C pharmacology are
Pharmacologist
Clinical researcher
Supply and distribution of medicine
Analytical chemist
Biomedical scientist
Medical research scientist
Lectures
Professores
Medical research scientist

For M.S.C Biochemistry, it is also a 2 year course which you have to get minimum 50% marks in B.S.C subjects. Chemistry of living organisms and deep study of living creatures are done in M.S.C Biochemistry.
Job opportunities are
Biotechnologist
Research scientist
Chemist
Research associate
Clinical scientist
Pharmacologist
Laboratory Technician
Also, you will get jobs in many drug manufacturing companies, health Institutes, private health companies etc
Both the courses have lot of oppuetunities, choose the course according to your ability.
Hope you get it,Thank you