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 4186 - 4190 of 5614
Q. 372
An atom of Magnesium has atomic number 12 and mass number 24. How many neutrons does it contain?
Q. 373
A neutral atom of Neon has atomic number 10. How many electrons does it contain?
Q. 374
An atom of Chlorine has atomic number 17 and mass number 35. How many protons does it contain?
Q. 375
An atom of Potassium has atomic number 19 and mass number 39. How many neutrons does it contain?
Q. 376
When solutions of sodium sulphate and barium chloride are mixed, a white precipitate of barium sulphate forms. What type of reaction is this?