Hello there!

Greetings!

Since you have completed your class 12th so engineering would be better for you rather than polytechnic but in case if you are not getting engineering colleges or you were going to pursue plain graduation like b.sc or b.a  then you may go for polytechnic as it opens wide range of opportunities for jobs both in private and government sectors and if you want you can pursue your graduation at the same time from open universities like IGNOU.

Thankyou