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 506 - 510 of 1956
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 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) · Set D · 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)
Easy
. SOF National Science Olympiad (NSO/ISO) · Set A · 2024 . Sample
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Q. 352
Find the mass of 2 mole(s) of sodium hydroxide (NaOH). (Molar mass = 40 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2024 . Sample
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Q. 353
Calculate the number of moles present in 32 g of oxygen gas (O2). (Molar mass = 32 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · Set D · 2025 . Sample
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Q. 354
Find the mass of 4 mole(s) of sodium chloride (NaCl). (Molar mass = 58.5 g/mol)