Red Seal Plumbing Practice Exam

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What must be installed with a laboratory sink that receives bio-hazardous waste?

A water filter
A cleanout below the flood level rim
A cleanout above the flood level rim
A grease trap

The correct answer is: A cleanout above the flood level rim

A cleanout above the flood level rim must be installed with a laboratory sink that receives bio-hazardous waste in order to prevent any potential contamination or backflow. Option A, a water filter, is not necessary as the primary purpose of a sink is to provide a way to dispose of bio-hazardous waste. Option B, a cleanout below the flood level rim, would not work as the cleanout must be above the flood level to prevent any hazardous waste from spilling out. Option D, a grease trap, is not necessary as bio-hazardous waste should not contain any greasy or oily substances. Therefore, option C is the correct answer as it is the most suitable and necessary option for the safe disposal of bio-hazardous waste.