Hello.
After completing your BSc pmcs it is not sure that you will definitely get placement because it totally depends upon your knowledge and skills,  job opportunities are available but for getting the these or for making these definite you will have  to acquire extra skills , placement after this course also depend upon the college from where you are going to complete your course.
Best of luck.

Hello aspirant

After BSc , you can work in field of

Research

As a lecturer

Analyst

Hospitals

Schools

Technician

Laboratory

Biologist

You can work in pharmaceutical industry

Chemical industry

There are still more options after post graduation ie master's degree in science. You will get more salary.