For your kind information, NCO is not science and is related to computers as it's full form also states National Cyber Olympiad. If you want to write a science Olympiad...You should be applying for NSO!!!
NCO IS NOT SCIENCE . BELOW ARE THE FULL FORMS
NCO- NATIONAL CYBER OLYMPIAD
NSO- NATIONAL SCIENCE OLYMPIAD
IMO- INTERNATIONAL MATHS OLYMPIAD
IEO- INTERNATIONAL ENGLISH OLYMPIAD
THANKS.. ..ANYWAY ANY QUERIES PLEASE ASK