Clinical research

Yes, you need to keep tracking the government websites. They can hire you in R&D department or you can go for drug inspector for invigorate pharma companies.

You can refer to the link for details: http://icriindia.com/

First of all you should be thorough with your B.Sc. syllabus. You should know all the basics of the subject you have chosen for B.Sc. You can achieve this by keeping contact with your teachers, seniors and reading books and the books you refer should be always reference books because the information given in the reference books is always correct and you should understand all the concepts from that reference book.
Clearing the basics is important to prepare for the entrance exam.