Chemistry Spl

No Rohit, because physical education is the optional subject, so it is not considered as academic or elective subjects.

Yes, you can apply for NET in chemical sciences, eligibility criteria for NET is 55% marks in Masters for open and 50% marks for SC/ST candidates.
You cannot appear for TET as for TET, B.Ed is must.

Hi Bivab,
B.Sc (hons.) is more specialized and includes more advanced theoretical and research skills and ideal, if you want to focus only on Chemistry related areas. B.Sc general provides the basics and foundation and good, if you want to explore broader subjects after graduation. In terms of job search, a B.Sc (hons.) degree is more valuable.

CS is better than chemistry in consideration with the ongoing market. If you choose chemistry, your chances are more in the research and teaching field.

The B.Sc chemistry graduates have many options for their higher studies. Majority of these graduates opt for masters degree in the same. But they can also choose various specialized areas in this field for the post graduation courses. Many universities offer the study of chemistry at post graduate and at doctoral levels. For joining M.Sc in chemistry or related discipline courses, they have to pursue B.Sc form any recognized universities with at least 55% marks.

You can either go with biology or with mathematics because in future you would have to choose either one from them. The one in which you have much interest, you should go for that.