M.Sc

Many students opt for M.Sc. after their B.Sc. This is mostly due to a desire to have higher qualification as just graduation is not valuable. Sometimes it is also due to a desire to go for research out of interest or just to study as one didn't find a good job. After B.Sc. some also opt for M.Sc. with a thought that one can prepare for other competitive exams like civil services, etc. besides pursuing M.Sc.
"So what to study after M.Sc.?" is again a question for those who just moved on to M.Sc. after B.Sc.
Options for what to do after MS/M.Sc include-
Go for PhD.
Go for the industry if you get a placement.
Apply for scientific assistant posts in research institutes.
Go for teaching.
Try for banking jobs.
Try for civil services.
PhD options-
This is what many people opt for if they have a chance. This paves way for potential research skills. For this, they need to qualify the entrance exams so as to be eligible for admission to the PhD programs in reputed universities and also will be provided with monthly fellowship from government bodies.
Industry job-
This is a good option but many consider it to be difficult to find one. The common industries one can try for are like pharmaceutical, biotechnology, agriculture, food, dairy like industries. If one can have a contact or try through some consultancy, they will be able to get a call for interview and also may qualify for the job.