B.Sc

B.Tech with CSE is a superior engineering degree over B.Sc CS and the most sought after degree in India. Toppers of engineering entrance exams are only able to make it to B.Tech CSE. Syllabus of B.Tech CSE is more rigorous in comparison to B.Sc CS and It is also tougher.

Both MCA and MCA are equally good options for B.Sc graduates. If you want to be a systems developer then opt for M.Sc and if you want to be an App developer then opt for MCA. Job opportunities for App development are more in comparison to system development in India. Lot of universities offer MCA through distance learning mode.

You can go for B.Ed if you want to make you career in the teaching line. You can opt for the preparation of UPSC exam too. Getting a Master's degree is a good option too.

It depends on the type of business school you want to get in. To get admission in the top most B-schools, you need to qualify CAT. For average B-schools, MAT is a better option.

Hello,
After completing B.Sc in microbiology, you can continue M.Sc degree in the same stream.
Below mentioned are some other post-graduation options:
1. Biotechnology.
2. Biochemistry.
3. Genetics.
4. Chemistry.
5. Biology.
Best of luck.

Dear
As per your query you can think of these fields for your future
Nano science or Nanotechnology
Environment science
Geo informatics
Astrophysics
Actuarial science
Psychology
Special education
Civil services
Development studies
Health care
Hospital administration
Defence
So choose the field according to your choice and caliber
All the best

No, dropping a year after class 12th won't make you ineligible to pursue any course.