If you passed with Science in class 12 with Physics, Chemistry, and Mathematics as your subjects then some of thebest courses after 12th science that you can pursue are the technical courses such as BE/B.Tech in Engineering. The duration of this course is 4 years and you can also choose the branch of engineering that you wish to specialize in such as mechanical engineering, civil engineering, chemical engineering, IT engineering, computer science engineering, genetic, plastics engineering, etc.