Previous Year Questions

Practice Questions

Browse and practice real questions from previous scholarship exams. Use filters to narrow down by year, subject, or exam.

Displaying 516 - 520 of 1956
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 2024 . Sample
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Q. 360
Calculate the number of moles present in 180 g of glucose (C6H12O6). (Molar mass = 180 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2025 . Sample
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Q. 361
An atom of Oxygen has atomic number 8 and mass number 16. How many neutrons does it contain?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set D · 2024 . Sample
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Q. 362
A neutral atom of Argon has atomic number 18. How many electrons does it contain?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set C · 2026 . Sample
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Q. 363
An atom of Aluminum has atomic number 13 and mass number 27. How many protons does it contain?
Easy
. SOF National Science Olympiad (NSO/ISO) · Set C · 2026 . Sample
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Q. 364
An atom of Sodium has atomic number 11 and mass number 23. How many neutrons does it contain?