B.Sc

Sachin you can't opt for M.Tech after B.Sc, you need to have a B.Tech degree to pursue M.Tech or you must have cleared the AMIE examination.

The eligibility depends on the type of course that you wish to pursue, the details of some courses is stated below:
Diploma Class 10th pass from a recognised board with minimum 40% marks.
Bachelors Degree: Class 10+2 examination with at least 50% marks.
Post-graduation degree: Bachelors degree from a recognised university with at least 45% marks.
Graduate & PG programs may also require you to appear in entrance exams such as NCHMCT, AIMA UGAT, E-CHAT etc.

You can go for below courses-
M.Sc Mathematics
M.Sc Physics
M.Sc Chemistry
M.Sc Computers
M.Sc Zoology
M.Sc Botany
MBA
MCA
B.Ed

You should opt for BCA. BCA is a job oriented course.

First of all, you should have self-confidence on your preparation. If you prepare thoroughly you will automatically gain confidence. It is very difficult to crack CAT exam without preparation. Be positive and start taking coaching.

Hi,
There are many options after completing B.Sc in medical. Few options are as follows:
* You can opt for pharma courses.
* You can do different medical technology courses or trainings on technician's course.
* MLT or Medical Lab Technology course is also in demand now-a-days, which is offered by several institutes as 3-year diploma course.
* You can also go for BHMS, BAMS or BPT.
* Hospitality managements is very popular, you can go for it.
You can do M.Sc or MS in medical microbiology from a good institute.
* There are also scopes of doing Master's in clinical psychology.