31. What happens during the clarification or separation step at a wastewater treatmentplant?
32. What happens during the disinfection step at a wastewater treatment plant?
33. What happens to liquid wastewater in a septic tank?
34. What happens to sludge in a septic tank?
35. What happens when you flush a toilet?
36. What is a zero liquid discharge system?
37. What is an important material between some toilets and the bathroom floor?
38. What is an occupational disease?
39. What is Black water?
40. What is DDT?
MCQ Multiple Choice Questions and Answers on Sanitation Health and Hygiene
Sanitation Health and Hygiene Trivia Questions and Answers PDF
Sanitation Health and Hygiene Question and Answer
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