76. Which one of the following disease is caused by bacteria:
77. Which one of the following gases plays a decisive role in affecting the climate of earth?
78. Which one of the following is a water borne disease?
79. Which one of the following, acts like a fuel in driving the body?
80. Which organ does Jaundice affect?
81. Which part of the toilet allows water to pass from the tank into the bowl?
82. Which process during wastewater treatment helps in killing germs?
83. Which process is used to remove dirt and sand from wastewater?
84. Which stream animal is an indicator of poor water quality?
85. Which two words mean ‘neat?
86. Which word means ‘any substance that causes an allergic reaction?
87. Which year has been declared as the International year of Sanitation by the UnitedNation Organization (UNO)?
88. Who invented the flushing toilet in 1596?
89. Why does the toilet bowl water level stay the same regardless of how much waste is deposited?
90. Why is porcelain a suitable material for the construction of toilets?
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