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 4196 - 4200 of 5614
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 382
When copper is heated in air, it reacts with oxygen to form a black coating of copper oxide. What type of reaction is this?
Easy
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2024 . Sample
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Q. 383
Balance the equation: __Na + __H2O → __NaOH + __H2
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 384
A reaction in which energy is absorbed from the surroundings is called what?
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2026 . Sample
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Q. 385
In the reaction Fe2O3 + 2Al → Al2O3 + 2Fe, which substance is oxidised?
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2026 . Sample
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Q. 386
When magnesium ribbon is burnt in air, it forms magnesium oxide. What type of reaction is this?