Medium SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2018 . Sample Practice variant 3: Which of the following is a physical change? A Burning paper B Melting of ice C Rusting of iron D Curd formation Submit Answer Show Explanation Mark as Completed Mark as Important Mark for Review
Sound cannot travel through which medium? SOF National Science Olympiad (NSO/ISO) . Easy · Physics · 2013 See Explanation
Practice variant 4: Which force opposes relative motion between surfaces in contact? SOF National Science Olympiad (NSO/ISO) . Hard · Physics · 2014 See Explanation
Practice variant 2: Sound cannot travel through which medium? SOF National Science Olympiad (NSO/ISO) . Medium · Physics · 2024 See Explanation
Practice variant 2: Which layer of the atmosphere contains most weather phenomena? SOF National Science Olympiad (NSO/ISO) . Medium · Science · 2025 See Explanation
Which SI unit is used for electric current? SOF National Science Olympiad (NSO/ISO) . Easy · Physics · 2014 See Explanation