Dear Heer,
You can not become a faculty of engineering College after completion of 10+2 .
First of all you have to complete your graduation degree in Mathematics, physics or chemistry with 55 percent marks from a recognised university.
Then you have to complete Bachelor of education degree with good marks from a recognised university.
Then you have to qualify the NET Examination.After this step you will be able to become a faculty of a engineering College.
Best of luck for your future journey.

Hey,
To be able to pursue the course in Engineering faculty you need to have studied Mathematics along with Physics and Chemistry. You need to have completed your 12th from a recognised board with 55 percent marks.
If you are from PCB background you need to have Mathematics along with it.
Hope this helps.
Good luck

No you cannot because it is compulsory to have PCM as your subjects. Had you taken PCM+B , then you could have.
All the best.