Hi,

There are many courses you can opt for after 12th in science other than engineering like:

1.) BSc in agriculture, IT, CS, Chemistry, Mathematics, Physics, Nautical Science, Elctronics, Electronics and Communication and Biotechnology which can be followed by an MSc.

2.) If you are even a least bit interested in Business then you can opt for BBA which can be followed by an MBA (this is what i chose, I was a PCM student too)

3.) You can try Hotel Management

4.) You can even opt for Law

5.) You can also look for Commercial Pilot Training.

I hope this helps.