Science

You can categorize your options into -
1) traditional courses ( like B.Sc. B.A. B.Com)
2) professional courses ( like B.Tech, B.Arch BDS etc. )
It also depend on how you want to study after 12th. Planning for your next 5 -10 years will give your more clearity. Further you can make choice on basis of if you want to continue with your Science stream or venture into a new stream.
1) Science stream- (a) Traditional courses B.Sc. Etc. ( b) professional courses - non engineering like paramedical courses, B.Sc. Nautical Science, B.Pharma etc. ).
2) other stream - (a) traditional courses B.A. B.Com (b ) professional B.A. LL.B. ( a very lucrative career option), B.A. BHM B.A. And other job oriented courses. Every category of study has its own advantage. Traditional course give you ease of cost and time for preparation of competitive exams and professional courses skills to get job easily. I suggest you to do any course which is relevant for future from best college and with planning of next 5 year. Even B.A. With correct subject combination is good. There are many non engineering courses in Science stream.