Chapter:

101. How long do most toilets take to flush?


102. How much water does a standard toilet tank hold?


103. What type of material are most toilets made of?


104. What happens when you flush a toilet?


105. Why is porcelain a suitable material for construction of toilets?


106. What is Electronic health recorder ?


107. A network of Interconnected sewers in area, district or town is known as ?


108. What is Black water?


109. Which of following is a biodegradable form of solid waste?


110. Who invented flushing toilet in 1596?


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