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 166 - 170 of 351
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2026 . Sample
Q. 356
Calculate the number of moles present in 200 g of calcium carbonate (CaCO3). (Molar mass = 100 g/mol)
Medium
. SOF National Science Olympiad (NSO/ISO) · Set A · 2025 . Sample
Q. 372
An atom of Magnesium has atomic number 12 and mass number 24. How many neutrons does it contain?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 2025 . Sample
Q. 388
In the reaction between dilute hydrochloric acid and sodium hydroxide, HCl + NaOH → NaCl + H2O, what type of reaction is this?
Easy
. SOF National Science Olympiad (NSO/ISO) · Set D · 2024 . Sample
Q. 404
Which of the following metals is liquid at room temperature?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set A · 2025 . Sample
Q. 420
How does metallic character generally change as we move down a group?