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 526 - 530 of 1956
Medium
. SOF National Science Olympiad (NSO/ISO) · Set D · 2024 . Sample
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Q. 370
An atom of Carbon has atomic number 6 and mass number 12. How many neutrons does it contain?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set C · 2025 . Sample
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Q. 371
A neutral atom of Magnesium has atomic number 12. How many electrons does it contain?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set A · 2025 . Sample
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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 A · 2025 . Sample
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Q. 373
A neutral atom of Neon has atomic number 10. How many electrons does it contain?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set D · 2025 . Sample
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Q. 374
An atom of Chlorine has atomic number 17 and mass number 35. How many protons does it contain?