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 4161 - 4165 of 5614
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2024 . Sample
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Q. 347
Calculate the number of moles present in 9.0 g of water (H2O). (Molar mass = 18 g/mol)
Easy
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 348
Find the mass of 4 mole(s) of water (H2O). (Molar mass = 18 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 349
Calculate the number of moles present in 58.5 g of sodium chloride (NaCl). (Molar mass = 58.5 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2024 . Sample
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Q. 350
Find the mass of 0.5 mole(s) of sodium hydroxide (NaOH). (Molar mass = 40 g/mol)
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 351
Calculate the number of moles present in 100 g of calcium carbonate (CaCO3). (Molar mass = 100 g/mol)