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 4136 - 4140 of 5614
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 322
The repeated reflection of sound that persists after the source has stopped producing sound is called what?
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 323
A sound wave has a frequency of 340 Hz and a wavelength of 2 m. Find its speed.
Easy
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2024 . Sample
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Q. 324
What is the approximate speed of sound in air at room temperature?
Medium
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2025 . Sample
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Q. 325
A sound wave has a frequency of 250 Hz and a wavelength of 1 m. Find its speed.
Hard
. SOF National Science Olympiad (NSO/ISO) · NSO Level 1 · 2026 . Sample
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Q. 326
What is the minimum distance required between a sound source and a reflecting surface for a human ear to hear a distinct echo?