Welcome to your Chemistry Knowledge Builder Quiz
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1. What is the chemical formula of washing soda?
2. What is the chemical formula of ammonia?
3. What is the valency of oxygen?
4. What is the pH value of a neutral solution at 25°C?
5. What is the atomic number of oxygen?
6. Which property allows metals to be drawn into wires?
7. Which gas is filled in electric bulbs?
8. Which of the following is a physical change?
9. What type of reaction is photosynthesis?
10. What is the chemical formula of sulphuric acid?
11. What is the pH range of acidic solutions?
12. Which element has the highest electronegativity?
13. What is the chemical name of baking soda?
14. Which subatomic particle determines the chemical identity of an element?
15. Which metal is liquid at room temperature?
16. Which type of reaction releases heat?
17. Which acid is found in ant stings?
18. What is the hardest natural substance?
19. Which element is known as the “king of chemicals”?
20. Which gas is released when zinc reacts with dilute hydrochloric acid?
21. Which of the following is a strong acid?
22. Which element is a halogen?
23. Which compound is used to neutralize acidic soil?
24. Which gas is produced during fermentation?
25. Which element has the chemical symbol ‘Fe’?