Water Nuggets Test 1 || with Errorless Answers.
1. Assuming all other variables remain the same, a decrease in the pH when using free chlorine
would?
Increase the C . T required and decrease the inactivation ratio
Increase the C . T required and increase the inactivation ratio
Decrease the C . T required and Decrease the inactivation ratio
Decrease the C . T required and increase the inactivation ratio correct answers Decrease the C . T
required and increase the inactivation ratio
2. What membrane process is used to treat brackish water or seawater?
Ultrafiltration
Reverse Osmosis
Nanofiltration
Microfiltration correct answers Reverse Osmosis
3. The more hydroxide ions
The more basic the solution
The more acidic the solution
The more more hydroactive
The more radioactive the solution correct answers The more basic the solution
4. A grout seal should be?
Installed 12" from the floor
,Have a backflow isntalled on it
Requires Screen Bars to keep rodents out
Filled with cement grout to a minimum of 10' down correct answers Filled with cement grout to
a minimum of 10' down
5. What does it mean if there are sand boils on the surfaces of rapid sand filters during
backwash?
There is not enough backwash water being reused and the operator should use raw water
The backwash valves are being opened too quickly
The Flux Capacitor is Clogged
All of the above correct answers The backwash valves are being opened too quickly
6. Why is turbidity in drinking water undesirable?
It provides a medium for the transmission of pathogens in drinking water
Can turn drinking water varying colors
Can cause odor complaints
Causes aesthetic issues in water which will results in complaints correct answers It provides a
medium for the transmission of pathogens in drinking water
7. What should the flexible copper tubing be rated at the connects a 150lb chlorine cylinder to a
manifold?
25 psi
100 psi
250 psi
500 psi correct answers 500 psi
, 8. What is used for detection of chlorine gas leaks?
10% solution of ammonia sulfide
10% solution of sulfuric acid
10% solution of ammonia hydroxide
10% solution of ammonia hyfluxide correct answers 10% solution of ammonia hydroxide
9. What are total dissolved minerals in rainwater typically close to?
10.00 mg/L
48.00 mg/L
40.00 mg/L
1.00 mg/L correct answers 10.00 mg/L
10. What happens when there is high algae growth in a reservoir?
DO and pH Decrease while CO2 Increase
DO and pH Increase while CO2 Decrease
DO, pH and CO2 Decrease
DO, pH and CO2 Increase correct answers DO and pH Increase while CO2 Decrease
11. Fluoride concentration above what mg/L will likely cause teeth to become pitted?
.01 mg/L
2 mg/L
4 mg/L
1. Assuming all other variables remain the same, a decrease in the pH when using free chlorine
would?
Increase the C . T required and decrease the inactivation ratio
Increase the C . T required and increase the inactivation ratio
Decrease the C . T required and Decrease the inactivation ratio
Decrease the C . T required and increase the inactivation ratio correct answers Decrease the C . T
required and increase the inactivation ratio
2. What membrane process is used to treat brackish water or seawater?
Ultrafiltration
Reverse Osmosis
Nanofiltration
Microfiltration correct answers Reverse Osmosis
3. The more hydroxide ions
The more basic the solution
The more acidic the solution
The more more hydroactive
The more radioactive the solution correct answers The more basic the solution
4. A grout seal should be?
Installed 12" from the floor
,Have a backflow isntalled on it
Requires Screen Bars to keep rodents out
Filled with cement grout to a minimum of 10' down correct answers Filled with cement grout to
a minimum of 10' down
5. What does it mean if there are sand boils on the surfaces of rapid sand filters during
backwash?
There is not enough backwash water being reused and the operator should use raw water
The backwash valves are being opened too quickly
The Flux Capacitor is Clogged
All of the above correct answers The backwash valves are being opened too quickly
6. Why is turbidity in drinking water undesirable?
It provides a medium for the transmission of pathogens in drinking water
Can turn drinking water varying colors
Can cause odor complaints
Causes aesthetic issues in water which will results in complaints correct answers It provides a
medium for the transmission of pathogens in drinking water
7. What should the flexible copper tubing be rated at the connects a 150lb chlorine cylinder to a
manifold?
25 psi
100 psi
250 psi
500 psi correct answers 500 psi
, 8. What is used for detection of chlorine gas leaks?
10% solution of ammonia sulfide
10% solution of sulfuric acid
10% solution of ammonia hydroxide
10% solution of ammonia hyfluxide correct answers 10% solution of ammonia hydroxide
9. What are total dissolved minerals in rainwater typically close to?
10.00 mg/L
48.00 mg/L
40.00 mg/L
1.00 mg/L correct answers 10.00 mg/L
10. What happens when there is high algae growth in a reservoir?
DO and pH Decrease while CO2 Increase
DO and pH Increase while CO2 Decrease
DO, pH and CO2 Decrease
DO, pH and CO2 Increase correct answers DO and pH Increase while CO2 Decrease
11. Fluoride concentration above what mg/L will likely cause teeth to become pitted?
.01 mg/L
2 mg/L
4 mg/L
