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 241 - 245 of 351
Easy
. SOF National Science Olympiad (NSO/ISO) · Set A · 2024 . Sample
See Explanation
Q. 352
Find the mass of 2 mole(s) of sodium hydroxide (NaOH). (Molar mass = 40 g/mol)
Easy
. SOF National Science Olympiad (NSO/ISO) · Set D · 2024 . Sample
See Explanation
Q. 368
A neutral atom of Sulphur has atomic number 16. How many electrons does it contain?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 2025 . Sample
See Explanation
Q. 384
A reaction in which energy is absorbed from the surroundings is called what?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set B · 2026 . Sample
See Explanation
Q. 400
What is common table salt (sodium chloride) an example of, in terms of acid-base chemistry?
Medium
. SOF National Science Olympiad (NSO/ISO) · Set C · 2024 . Sample
See Explanation
Q. 416
Which family of elements in the periodic table is known as the noble gases and is characterised by very low chemical reactivity?