Water Operation Certification Exam Prep - Treatment
Process - II / Water Treatment Advanced Test
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1) If clarification and filtration follow aeration , what process will most probably suffer most if
too much aeration occurs?
- Correct Answer: Sedimetation
2) Jar test are used to determine the powdered activated carbon dose. The glassware used in
these jar tests need to be cleaned with ________ and rinsed with ______ water.
- Correct Answer: unscented detergent , odor-free
3) The rate of formation of ________ increase with increasing pH.
- Correct Answer: Organophosphates
4) In variable declining -rate filtration , what is placed in the effluent line of each filter to
prevent excessive flow rates ?
- Correct Answer: A flow -restricting orifice plate
,5) A tracer study uses a substance that can readily be identified in water to determine the
________ in a basin , pipe, or channel.
- Correct Answer: distribution and detention time
6) Both the amount and types of disinfection byproducts formed depend not only on the
organic precursos present but also on the ________.
- Correct Answer: Type of disinfectant used and contact time with that disinfectant.
7) What is the best practice to follow for a filter that is air-bound?
- Correct Answer: a)Remove from service and backwash thoroughly.
8) In manganese greensand filters , the greensand is usually capped with at least ________.
- Correct Answer: 6 in of anthracite
9)Lamella plates work by _________.
- Correct Answer: Using parallel plates that direct the water downward then upward at 55°
10) The flow through a sedimentation basin should not exceed______. = El flujo a través de un
estanque de sedimentación no debe exceder______.
- Correct Answer: 0.5 ft/min
11) What is the mechanism by which potassium permanganate works when used to control
algae?
- Correct Answer: b) It precipitates iron , which is needed by the algae for chlorophyll
production.
, 12) If THMs are still a problem after softening , and changing the disinfectant is not an option ,
what other treatment process can be used and what is its disadvantage?
- Correct Answer: a) Granular activated carbon , rather expensive.
13) what Process is currently used for softening brackish water ? = ¿Qué proceso se utiliza
actualmente para ablandar el agua salobre?
- Correct Answer: a) Nanofiltration
14) Greensand filters are often capped to enhance filter performance and improve backwash
efficiency. It is common to cap them with __________. =Los filtros de arena verde a menudo se
tapan para mejorar el rendimiento del filtro y mejorar la eficiencia del retrolavado. Es
común taparlos con __________.
- Correct Answer: d.) 18- in of anthracite
15) What other effect does aeration have besides oxidizing iron and manganese ?
- Correct Answer: b) It removes CO2 which enhances oxidation because it raises the pH.
16) Chloramines will be used when tastes and odors are a problem , particularly when the
source water contains _________.
- Correct Answer: b) phenols
17) What treatment chemical is corrosive , dense , and an oily liquid and is available in strengths
of 62% , 78% and 93%?
- Correct Answer: d) Sulfuric Acid
18) Besides oxidizing iron and manganese , potassium permanganate has been found to be
most effective in controlling __________.
- Correct Answer: a) Zebra mussels
Process - II / Water Treatment Advanced Test
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1) If clarification and filtration follow aeration , what process will most probably suffer most if
too much aeration occurs?
- Correct Answer: Sedimetation
2) Jar test are used to determine the powdered activated carbon dose. The glassware used in
these jar tests need to be cleaned with ________ and rinsed with ______ water.
- Correct Answer: unscented detergent , odor-free
3) The rate of formation of ________ increase with increasing pH.
- Correct Answer: Organophosphates
4) In variable declining -rate filtration , what is placed in the effluent line of each filter to
prevent excessive flow rates ?
- Correct Answer: A flow -restricting orifice plate
,5) A tracer study uses a substance that can readily be identified in water to determine the
________ in a basin , pipe, or channel.
- Correct Answer: distribution and detention time
6) Both the amount and types of disinfection byproducts formed depend not only on the
organic precursos present but also on the ________.
- Correct Answer: Type of disinfectant used and contact time with that disinfectant.
7) What is the best practice to follow for a filter that is air-bound?
- Correct Answer: a)Remove from service and backwash thoroughly.
8) In manganese greensand filters , the greensand is usually capped with at least ________.
- Correct Answer: 6 in of anthracite
9)Lamella plates work by _________.
- Correct Answer: Using parallel plates that direct the water downward then upward at 55°
10) The flow through a sedimentation basin should not exceed______. = El flujo a través de un
estanque de sedimentación no debe exceder______.
- Correct Answer: 0.5 ft/min
11) What is the mechanism by which potassium permanganate works when used to control
algae?
- Correct Answer: b) It precipitates iron , which is needed by the algae for chlorophyll
production.
, 12) If THMs are still a problem after softening , and changing the disinfectant is not an option ,
what other treatment process can be used and what is its disadvantage?
- Correct Answer: a) Granular activated carbon , rather expensive.
13) what Process is currently used for softening brackish water ? = ¿Qué proceso se utiliza
actualmente para ablandar el agua salobre?
- Correct Answer: a) Nanofiltration
14) Greensand filters are often capped to enhance filter performance and improve backwash
efficiency. It is common to cap them with __________. =Los filtros de arena verde a menudo se
tapan para mejorar el rendimiento del filtro y mejorar la eficiencia del retrolavado. Es
común taparlos con __________.
- Correct Answer: d.) 18- in of anthracite
15) What other effect does aeration have besides oxidizing iron and manganese ?
- Correct Answer: b) It removes CO2 which enhances oxidation because it raises the pH.
16) Chloramines will be used when tastes and odors are a problem , particularly when the
source water contains _________.
- Correct Answer: b) phenols
17) What treatment chemical is corrosive , dense , and an oily liquid and is available in strengths
of 62% , 78% and 93%?
- Correct Answer: d) Sulfuric Acid
18) Besides oxidizing iron and manganese , potassium permanganate has been found to be
most effective in controlling __________.
- Correct Answer: a) Zebra mussels
