Rupnagar, March 24 -- Student of Rayat International School, Rupnagar, Chinmya Gupta has achieved first rank in National Science Olympiad(NSO) for the third time. Principal Subha Rathore said about 50,000 schools students from 30 different countries had participated in the NSO. A Class-9 student Chinmya Gupta was awarded with cash prize of rupees 50,000 by NSO for her first rank....