Masters

There is no problem in gaping your education. But, you may face the problem with your age bar. Not only in government sector, but private sector also have to fulfill some criterion where age play a major role. So, without delay, you must try for job just after completion of your Master's degree.

Best option for you depends on your dream job, what you want to do in your life. If you want to go for the armed forces, then you can give CDS exam after your B.Sc non-medical. If you want to go for higher studies, then you should opt for M.Sc in your favorite subject and do research afterwards. And, if you don't want to research then you can apply for jobs.

SPJIMR is one of the top 10 B-Schools in the country. As per my experience it is a journey towards becoming an empathetic leader. The diverse curriculum with focus on non classroom initiatives such as rural internship, global fast track program and mentorship program provide a 360 degree learning experience to an individual. Also being in the financial capital of India gives you an unparalleled exposure which only few B-Schools in India enjoy.

This link will assist you with the right institute for the right course.
https://www.google.co.in/url?sa=t&source=web&rct=j&url=http://www.studyguideindia.com/Colleges/Distance-Education/default.asp?Course=M-Phil-Colleges&state=KL&ved=0ahUKEwjQgOXAyKfWAhWGp48KHRAhBUcQFggoMAA&usg=AFQjCNF7IJtykX3g9wKi2KiGdLSjUMACrw

Yes, India also provides a good education and wide range of placement, if you have done your Master's from a reputed university.

There are a number of options available to you after completing B.Sc. in Chemistry. Some of the popular courses you can opt for are as follows:
1) MBA
2) M.Sc.
3) MS/M.Tech
4) MCA
5) UPSC (Civil Services)
6) CDS (Defence services)
The choice is yours. You should select a course which you feel comfortable with, as it will stick with you for most of your professional career.