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 551 - 555 of 1956
Medium
. SOF National Science Olympiad (NSO/ISO) · Set A · 2025 . Sample
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Q. 395
What is the pH of a neutral solution such as pure water?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2024 . Sample
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Q. 396
Which gas is produced when a metal reacts with a dilute acid?
Hard
. SOF National Science Olympiad (NSO/ISO) · Set B · 2024 . Sample
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Q. 397
What colour does red litmus paper turn when dipped in a basic solution?
Easy
. SOF National Science Olympiad (NSO/ISO) · Set C · 2024 . Sample
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Q. 398
Baking soda (sodium hydrogen carbonate) is used in antacids and baking. What kind of salt is it?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 2024 . Sample
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Q. 399
What is formed when an acid reacts with a base?