Sets
Chemistry Set 8
30 questions 1. Dioxygen in the atmosphere is present to the extent of about:
2. Sambhar Lake, a water body containing common salt, is located in:
3. A mild base used to relieve the pain of a bee sting is:
4. Ethanoic acid reacts with absolute ethanol in the presence of an acid catalyst to give:
5. Water droplets in clouds are generally formed around:
6. The salt formed when zinc reacts with warm sodium hydroxide solution is:
7. Which of the following is a chemical property?
8. Crude petroleum is separated into its different fractions by:
9. The reaction of iron(III) oxide with aluminium, used to join railway tracks, is called:
10. Soap micelles stay in solution and do not precipitate because of:
11. Pure ethanoic acid often freezes in winter in cold climates, giving rise to the name:
12. Any substance that is used to create an object is called a:
13. The number of elements that exist in the gaseous state at room temperature is:
14. Which pair of metal oxides dissolves in water to form alkalis?
15. 1 m³ is equal to:
16. Which of the following is a pure substance?
17. When sodium sulfate solution is mixed with barium chloride solution, the white precipitate formed is:
18. An oxidising agent is a species that is:
19. Our body works within the pH range of:
20. The shiny finish on whitewashed walls is due to the formation of: