B test material - TCEQ Class B
Surface Water 2026 Exam
Questions and Answers |
Already Graded A+
What is the most important factor affecting the useful life of service
lines? - ANSWER ✔✔It is the ability of the material to resist internal
and external corrosion
When does Suction Head exist? - ANSWER ✔✔Suction head exists
when the source of supply is above the centerline of the pump.
,What is Net positive Suction Head (NPSH) - ANSWER ✔✔NPSH is
the pressure under which water enters the eye of the impeller in a
centrifugal pump. Insufficient NPSH is the main cause of pump cavitation
Explain and expand on Chlorine Dioxide (what it reacts with, oxidizes,
etc) - ANSWER ✔✔Chlorine Dioxide is a gas used in small quantities
to disinfect water. It does not react with organics to form THMs and
HAAs. It oxidizes phenols, manganese, iron, sulfurous and organic
compounds which aids in the removal of tastes and odors. It is a very
effective bactericide and a superior virocide. It dies not combine with
ammonia. Chlorine Dioxide MRDL is .8 mg/L and monitoring procedures
are the same as for chlorine. The Chlorite MCL is .q mg/L and must be
monitored daily.
What is texas drinking water pH requirements? - ANSWER ✔✔The
texas drinking water requirements require a pH > 7.0 for the water
treatment plant finished water. EPA requires that pH analysis be
preformed within 15 minutes of the sample being caught.
How does pH affect Chlorine activity? - ANSWER ✔✔When chlorine
is added to water it forms hypochlorous acid (HOCL) and hydrochloric
acid (OCL). The hypochlorous acid is the effective disinfectant. At a pH
of 4.0 there is 100% hypochlorous acid. At a pH of 11 there is 100%
,hypochlorite ion. At a pH of 7, the hypochlorous acid is at about 80% and
the hypochlorite ion makes up about 20% of the chlorine content. The
lower the pH is more effective chlorine is because you have more
hypochlorous acid.
What is meant by water stability? - ANSWER ✔✔Stable water is
defined as water that will neither deposit or dissolve a calcium carbonate
film or scale. Since no water is stable indefinitely, chemical treatment of
water usually is intended to produce water that is slightly scale forming
without being liable to cause stoppages in small lines and services.
Bayliss curve is the simplest determination of stability. The Langelier
saturation index is also used.
What/how are above ground tanks and piping protected from corrosion?
- ANSWER ✔✔Corrosion protection for above ground tanks and
piping is prevented by: cathodic protection, use if protective
linings/coatings, eliminating different types of metals in the distribution
system, and treating the water with chemicals to make it less corrosive
How do you tests fir alkalinity? - ANSWER ✔✔The two tritiation
methods of analysis are a standard acid to titrate a sample. The end
point of the titration is determined by the following: an indicator that
changes color at a certain pH, or potentiometric titration to end - point
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, pH. Using either of the methods, a measured amount of sample is
titrated with a standard sulfuric acid to a predetermined pH. Nomograph
are a graphical form of determining alkalinity. If the pH, total alkalinity,
temperature and total dissolved solids are known, any or all of the
alkalinity forms may be estimated.
What is Turbidity? - ANSWER ✔✔Turbidity can be described as a
measure of the relative clarity of water. Turbidity is an expression of the
optical property that causes light to be scattered and absorbed rather
than transmitted in straight lines through the sample.
What causes Turbidity? - ANSWER ✔✔Turbidity is caused by clay,
slit, finely divided organic and inorganic material. Other suspended
matter and microscopic organisms can also cause turbidity. There is one
approved method for running turbidity - the Nephelometric Method
(NTU)
What is chlorine Demand? - ANSWER ✔✔The amount of chlorine
used up to completely react with the water and its suspended or dissolve
material
What is chlorine residual? - ANSWER ✔✔When all the demand of the
water is met any additional chlorine produces a chlorine residual
Surface Water 2026 Exam
Questions and Answers |
Already Graded A+
What is the most important factor affecting the useful life of service
lines? - ANSWER ✔✔It is the ability of the material to resist internal
and external corrosion
When does Suction Head exist? - ANSWER ✔✔Suction head exists
when the source of supply is above the centerline of the pump.
,What is Net positive Suction Head (NPSH) - ANSWER ✔✔NPSH is
the pressure under which water enters the eye of the impeller in a
centrifugal pump. Insufficient NPSH is the main cause of pump cavitation
Explain and expand on Chlorine Dioxide (what it reacts with, oxidizes,
etc) - ANSWER ✔✔Chlorine Dioxide is a gas used in small quantities
to disinfect water. It does not react with organics to form THMs and
HAAs. It oxidizes phenols, manganese, iron, sulfurous and organic
compounds which aids in the removal of tastes and odors. It is a very
effective bactericide and a superior virocide. It dies not combine with
ammonia. Chlorine Dioxide MRDL is .8 mg/L and monitoring procedures
are the same as for chlorine. The Chlorite MCL is .q mg/L and must be
monitored daily.
What is texas drinking water pH requirements? - ANSWER ✔✔The
texas drinking water requirements require a pH > 7.0 for the water
treatment plant finished water. EPA requires that pH analysis be
preformed within 15 minutes of the sample being caught.
How does pH affect Chlorine activity? - ANSWER ✔✔When chlorine
is added to water it forms hypochlorous acid (HOCL) and hydrochloric
acid (OCL). The hypochlorous acid is the effective disinfectant. At a pH
of 4.0 there is 100% hypochlorous acid. At a pH of 11 there is 100%
,hypochlorite ion. At a pH of 7, the hypochlorous acid is at about 80% and
the hypochlorite ion makes up about 20% of the chlorine content. The
lower the pH is more effective chlorine is because you have more
hypochlorous acid.
What is meant by water stability? - ANSWER ✔✔Stable water is
defined as water that will neither deposit or dissolve a calcium carbonate
film or scale. Since no water is stable indefinitely, chemical treatment of
water usually is intended to produce water that is slightly scale forming
without being liable to cause stoppages in small lines and services.
Bayliss curve is the simplest determination of stability. The Langelier
saturation index is also used.
What/how are above ground tanks and piping protected from corrosion?
- ANSWER ✔✔Corrosion protection for above ground tanks and
piping is prevented by: cathodic protection, use if protective
linings/coatings, eliminating different types of metals in the distribution
system, and treating the water with chemicals to make it less corrosive
How do you tests fir alkalinity? - ANSWER ✔✔The two tritiation
methods of analysis are a standard acid to titrate a sample. The end
point of the titration is determined by the following: an indicator that
changes color at a certain pH, or potentiometric titration to end - point
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, pH. Using either of the methods, a measured amount of sample is
titrated with a standard sulfuric acid to a predetermined pH. Nomograph
are a graphical form of determining alkalinity. If the pH, total alkalinity,
temperature and total dissolved solids are known, any or all of the
alkalinity forms may be estimated.
What is Turbidity? - ANSWER ✔✔Turbidity can be described as a
measure of the relative clarity of water. Turbidity is an expression of the
optical property that causes light to be scattered and absorbed rather
than transmitted in straight lines through the sample.
What causes Turbidity? - ANSWER ✔✔Turbidity is caused by clay,
slit, finely divided organic and inorganic material. Other suspended
matter and microscopic organisms can also cause turbidity. There is one
approved method for running turbidity - the Nephelometric Method
(NTU)
What is chlorine Demand? - ANSWER ✔✔The amount of chlorine
used up to completely react with the water and its suspended or dissolve
material
What is chlorine residual? - ANSWER ✔✔When all the demand of the
water is met any additional chlorine produces a chlorine residual
