You need to have a master's degree in order to have a good professional life. Actually these courses are more theoretical oriented . So students do not get the proper industrial exposure, knowledge of practical applications and the required experience to flourish in these departments. Once you do a master's you are considered a knowledgeable person in your field. Then you may have the opportunity to start with a full time project or assist a professor on a project. Slowly working on these you build a strong set of knowledge and experience which helps you to build you career. A Phd in your domain boosts your potential a lot to further develop in science. It takes time and you need to be academically strong to clear all the exams and interviews at various stages in your life. It will take time and things may come slowly. But if you enjoy it you can really cherish every moment of yours studying or working.

Talking in terms of opportunities you can be a forensic expert, or placed in a pharmaceutical firm, may be in a PSU such as Indian oil, ONGC, Oil India. You may even go further to be a research scholar and taking yourself to next level to become a scientist.