List of National /International Competitive Exams for School Students National Science Olympiad [NSO] The Science Olympiad Foundation (SOF) conducts this National Science Olympiad (NSO) exam. It has 2 levels, level 1 & level 2 Eligibility: Candidates from class 1 to 12 For Class 1 To 4 –   Total 35 Question – Time Duration – 1  hour […]