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 11 - 15 of 351
Hard
. SOF National Science Olympiad (NSO/ISO) · Set D · 2025 . Sample
Q. 423
Which part of the human respiratory system is the actual site of gas exchange?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set B · 2026 . Sample
Q. 439
Which structure controls the opening and closing of stomata in a leaf?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set B · 2025 . Sample
Q. 455
The sudden closing of leaves of the 'touch-me-not' (Mimosa pudica) plant upon touch is an example of which kind of movement?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2024 . Sample
Q. 471
If a tall pea plant (TT) is crossed with a short pea plant (tt), what will be the height of the offspring in the F1 generation?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set A · 2024 . Sample
Q. 487
What term describes the harmful accumulation of non-biodegradable chemicals in increasing concentration at higher trophic levels of a food chain?