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Water Supply & Sanitation MCQs

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1. What is the primary purpose of a safe water supply?





2. Which of the following is considered a safe source of drinking water?





3. Water intended for drinking is called:





4. Which process removes large suspended particles from water?





5. The main purpose of filtration in water treatment is to:





6. Chlorination is mainly used to:





7. Which chemical is commonly used for chlorination of water?





8. The ideal residual chlorine level in drinking water after 30 minutes is:





9. Which disease is commonly transmitted through contaminated drinking water?





10. Typhoid fever is mainly spread through:





11. Which microorganism commonly causes cholera?





12. Boiling water for drinking mainly:





13. Which is the safest household method of water purification?





14. Water hardness is mainly caused by:





15. Which of the following is a physical characteristic of water?





16. The pH of safe drinking water is generally:





17. Which test indicates fecal contamination of water?





18. Sanitation refers to:





19. Which is the most sanitary method of excreta disposal in urban areas?





20. Open defecation mainly increases the risk of:





21. Which toilet system is commonly used in rural areas?





22. A sanitary latrine should be located:





23. The main purpose of sewage treatment is to:





24. Which stage of sewage treatment removes large floating materials?





25. Septic tanks are mainly used for:





26. Which practice helps prevent contamination of drinking water?





27. Handwashing with soap after using the toilet helps prevent:





28. Which disease is strongly associated with poor sanitation?





29. Which is an example of a waterborne disease?





30. Rainwater harvesting is mainly done to:





31. Which organization monitors drinking water quality globally?





32. Which type of pollution directly affects drinking water quality?





33. Safe water storage at home requires:





34. Which disease can result from drinking arsenic-contaminated water?





35. Excess fluoride in drinking water may cause:





36. Which method is commonly used to disinfect wells?





37. Which type of waste is carried through sewer systems?





38. The fecal-oral route is commonly associated with:





39. Which is the best method to prevent waterborne diseases?





40. Which disease is commonly prevented by improving sanitation?





41. The main objective of sanitation programs is to:





42. Which water treatment process improves taste and odor by removing dissolved gases?





43. Which of the following is an improved sanitation facility?





44. Safe disposal of human excreta helps reduce:





45. The most important indicator of bacteriological water quality is:





46. Water scarcity can be reduced by:





47. Which practice promotes community sanitation?





48. The Sustainable Development Goal (SDG) specifically related to clean water and sanitation is:





49. Which environmental condition favors the spread of waterborne diseases?





50. The ultimate aim of water supply and sanitation programs is to:





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