TEHRAN, July. 25 (MNA) Iranian students won four silver medals in the 45th International Chemistry Olympiad, which was held from July 15 to 24 in Moscow, Russia. The four-member team comprised of Mahdiyar Amani Tehrani, Hirbod Heidari, Ashkan Khavaran, and Arya Aminorroaya. The International Chemistry Olympiad (IChO) is a chemistry competition ...