WATER DISTRIBUTION PRACTICE TEST D1
D2 ACTUAL TEST QUESTIONS AND
SOLUTIONS GRADED A+ VERIFIED
RESOURCE
●● The bubbles formed in a positive multiple tube fermentation test are
Answer: Carbon Dioxide
●● The maximum rate of withdrawal of gas from a 150lb chlorine
cylinder in 24-hours is
Answer: 40 lbs
●● If you encounter a liquid chlorine leak in a one tone container, what
action should you take first, to reduce the severity of the leak?
Answer: Rotate the container to place the leak at the top
●● The most commonly used water disinfectant in the United States is
Answer: Chlorine
●● When collecting a distribution system sample, the water should be
allowed to run for a period of time prior to sample collection. How long
Answer: As long as necessary to permit cleaning of service line
, ●● Sample bottles wich are furnished by a certified laboratory for
collection of bacteriological samples
Answer: Are ready to use
●● The difference between water pressure upstream and downstream of
a pump when it is not in operations is know as the
Answer: Total static head
●● A device that automatically shuts off flow in an elevated storage tank
when the water level in the tank reache a preset level is termed a
Answer: Altitude valve
●● In an occupied trench requiring personal egress what is the
maximum allowable distance between a worker and an exit letter
Answer: 25 feet
●● A water bearing formation in the soil is referred to as
Answer: An aquifer
●● The distance between the static water level and the pumping water
level is termed the
Answer: Drawdown
D2 ACTUAL TEST QUESTIONS AND
SOLUTIONS GRADED A+ VERIFIED
RESOURCE
●● The bubbles formed in a positive multiple tube fermentation test are
Answer: Carbon Dioxide
●● The maximum rate of withdrawal of gas from a 150lb chlorine
cylinder in 24-hours is
Answer: 40 lbs
●● If you encounter a liquid chlorine leak in a one tone container, what
action should you take first, to reduce the severity of the leak?
Answer: Rotate the container to place the leak at the top
●● The most commonly used water disinfectant in the United States is
Answer: Chlorine
●● When collecting a distribution system sample, the water should be
allowed to run for a period of time prior to sample collection. How long
Answer: As long as necessary to permit cleaning of service line
, ●● Sample bottles wich are furnished by a certified laboratory for
collection of bacteriological samples
Answer: Are ready to use
●● The difference between water pressure upstream and downstream of
a pump when it is not in operations is know as the
Answer: Total static head
●● A device that automatically shuts off flow in an elevated storage tank
when the water level in the tank reache a preset level is termed a
Answer: Altitude valve
●● In an occupied trench requiring personal egress what is the
maximum allowable distance between a worker and an exit letter
Answer: 25 feet
●● A water bearing formation in the soil is referred to as
Answer: An aquifer
●● The distance between the static water level and the pumping water
level is termed the
Answer: Drawdown
