Description: Practice Class 10 Chemistry Chapter 15 MCQs on Environmental Chemistry II: Water. These important objective questions are based on FBISE exam pattern and include water pollution, hardness of water, purification, and treatment methods.
1. Water covering most of Earth’s surface is:
2. Hard water does not easily form lather with:
3. Temporary hardness of water is caused by:
4. Permanent hardness is mainly due to:
5. Which process removes temporary hardness?
6. Water pollution mainly affects:
7. The chemical formula of water is:
B)
C)
D)
8. Which chemical is commonly used for water purification?
9. Distilled water is:
10. The process of removing impurities by passing water through filters is:
11. Which salt causes permanent hardness?
12. The universal solvent is:
13. Water-borne diseases include:
14. Which method is used to obtain pure water in laboratories?
15. Which gas dissolved in water forms carbonic acid?
16. Soft water readily forms lather with:
17. Which process kills germs in water?
18. The hardness caused by bicarbonates is called:
19. Which ion is mainly responsible for hardness of water?
20. Which process removes dissolved salts from water?
21. Which substance is added to soften permanent hard water?
22. The unpleasant smell and color of polluted water are due to:
23. Which water is suitable for drinking?
24. Which process allows heavy particles to settle at bottom?
25. Which disease spreads through contaminated water?
26. Sea water contains large amount of:
27. Which process is used in water treatment plants?
28. Temporary hardness can be removed by:
29. Water pollution can decrease the amount of dissolved:
30. Which type of water is free from dissolved salts?
31. The process of removing large suspended particles is:
32. Which chemical is commonly used in bleaching powder?
33. Which source provides underground water?
34. Which process separates water from dissolved salts by evaporation and condensation?
35. Water pollution is mainly caused by:
36. Which ion causes temporary hardness?
37. Which process removes bacteria from water?
38. Which property makes water useful as solvent?
39. Which water source contains maximum dissolved salts?
40. Which disease may occur due to drinking polluted water?
41. Rain water is naturally:
42. Which method is commonly used to soften permanent hard water?
43. Which process separates insoluble impurities from water?
44. Which type of water is best for car batteries?
45. Water treatment plants mainly supply:
46. Which process removes dissolved gases from water?
47. Which water source is least polluted naturally?
48. The removal of temporary hardness produces:
49. Which substance is commonly used to disinfect water in swimming pools?
50. Environmental chemistry of water mainly deals with: