Science

If you work hard, then it's possible, because it is compulsory to have Maths for Diploma and Engineering Degree. If you do Diploma and then go for Engineering Degree directly into second year, you have to give M3. Means in 1st and 2nd Year of Engineering, where maths is compulsory. So, if you work hard and study regularly you can. Definitely you can, but you have to study regularly and hard for maths, if you say your maths is weak.

Keep attention/eye on employment news. There are immense job opportunities. All the best.

Hi Kuldip,
Yes, you can get admission in computer engineering in Bangalore because minimum eligibility to apply is 50%.
Good luck.

Hi Debajyoti. List of some careers in microbiology:
Research Assistant
Food, Industrial or Environmental Microbiologists
Quality Assurance Technologists
Sales or Technical Representative
Clinical and Veterinary Microbiologists
Medical Technologists
Biomedical Scientist, etc.