Hello vandana,
After 12 you can go for btech stream which includes medical and engineering  ,degree stream .
Btech is the best preferred option so that you will be entering in to IT fields and as well as electronics fields based on the department you prefer
Since IT Field is the most important and very trending field in the present generation 
Software fields also plays a very important role in todays life
Medical field is the very very highest preference field ,you can mould yourself in to an doctor,dentist,and so many medical related jobs
Decide your career based on the availabilities you preferred
Good luck,
Thank you

Hello Vandana,

You can go for the following career choices,

1. Engineering

2. Architecture.

3. Merchant Navy

4. Commercial Pilot

5. Bachelor of Science

6. Business Administration and Management Studies