Hello Nitin, Don't worry there are many other career options other than engineering so you need not worry about it.
If you want to continue with the science field then you can opt for B.Sc, B.C.A, B.Arch., B.Pharmacy, B.B.A., Commercial Pilot Training, Diploma courses, Bachelor of interior design, D.Pharm, Management courses.

And if you planning to do any course, then you can choose a career in Air Hostess Training, Event management courses, Hospitality Diploma course, Law, Animation and graphics designs.