46. What is the name given to the green pigment in plants?
47. What is the objective of National Health Policy 2015?
48. What is the purpose of the holes under the toilet bowl rim?
49. What is the purpose of the toilet tank float?
50. What is the single most effective way to prevent the transmission of disease?
51. What is the single most effective way to prevent the transmission of disease?
52. What is the time necessary for a toilet tank to fill with water?
53. What is wastewater?
54. What role do non-governmental organizations (NGOs) play in protecting water quality?
55. What role does Central or a state Government play in protecting water quality?
56. What type of material are most toilets made of?
57. What uses, on average, 26% of the water in a home?
58. What would happen if all the fungi and other decomposers disappeared?
59. What would happen if the toilet float malfunctioned and the water kept flowing?
60. When replacing an old toilet, what designer option do you have?
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