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TCEQ CLASS B SURFACE WATER B
TEST MATERIAL EXAM 2025 BRAND
NEW ACTUAL EXAM WITH 100%
VERIFIED QUESTIONS AND CORRECT
SOLUTIONS| ACE YOUR GRADES.
1. The most important characteristics of filter media are particle
size and uniformity coefficient. - correct answer -True
2. Sand is sized (graded) by shaking media through progressively
larger wire meshes, called sieves. - correct answer -False
3. If the media is too course, it will not remove small turbidity and
if it is too fine, filter flow is restricted causing short filter runs. -
correct answer -True
4. Sand particle shape, density, hardness, and porosity have a
marked affect on filtration. - correct answer -True
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5. Media hardness is important because the grinding action of a
backwash breaks down soft sand. - correct answer -True
6. Fine sand permits longer filter runs than course sand, and fine
sand is less effective than course sand in removing bacteria
and turbidity. - correct answer -False
7. The uniformity coefficient is the mesh size that passes 10% of
the sand divided by the mesh size that passes 60% of the
sand. - correct answer -False
8. Filter sand should be durable grains of siliceous material in the
hardness range of talc - correct answer -False
9. After washing with distilled water and allowed to settle, sand is
acceptable if the upper layer is clear and the surface is free of
floating material. - correct answer -True
10. Acid solubility should not exceed 50% by weight after
treatment with 5% HCL. - correct answer -False
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11. Prior to service, sand is prepared by backwashing the sand
bed once to create at least a 3% sand expansion. - correct
answer -False
12. Before a new filter is placed into service, the filter must be
chlorinated with a dosage of ________ mg/L and the chlorine
allowed to contact the filter at least ________ hours. - correct
answer -50 and 24
13. Crushed anthracite is often added to replace some of the
________. - correct answer -Sand
14. Advantages claimed for anthracite are higher filtration rates,
longer filter runs, less tendency to coat with ________, and
lower backwash velocity. - correct answer -Lime
15. Because of the density and general particle shape, filtration
characteristics of ________ are similar to ________. - correct
answer -Activated Carbon and Antracite
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16. The adsorption properties of activated carbon include taste
and odor-causing substances and impurities such as
________. - correct answer -Trihalomethanes
17. Particle size, carbon bed depth, filtration rate, and water
________ influence head loss. - correct answer -Temperature
18. Filter ________ supports the ________ or other filter
medium and distributes the wash water uniformly over the
underdrains. - correct answer -Gravel and Sand
19. The average gravel depth ranges from ________ inches. -
correct answer -6 - 24
20. High-density garnet sand, called the "________" layer,
supports the fine media and separates it from the gravel. -
correct answer -Barrier
21. Inspection of a filter bed is not part of a maintenance
program. - correct answer -False
TCEQ CLASS B SURFACE WATER B
TEST MATERIAL EXAM 2025 BRAND
NEW ACTUAL EXAM WITH 100%
VERIFIED QUESTIONS AND CORRECT
SOLUTIONS| ACE YOUR GRADES.
1. The most important characteristics of filter media are particle
size and uniformity coefficient. - correct answer -True
2. Sand is sized (graded) by shaking media through progressively
larger wire meshes, called sieves. - correct answer -False
3. If the media is too course, it will not remove small turbidity and
if it is too fine, filter flow is restricted causing short filter runs. -
correct answer -True
4. Sand particle shape, density, hardness, and porosity have a
marked affect on filtration. - correct answer -True
, Page | 2
5. Media hardness is important because the grinding action of a
backwash breaks down soft sand. - correct answer -True
6. Fine sand permits longer filter runs than course sand, and fine
sand is less effective than course sand in removing bacteria
and turbidity. - correct answer -False
7. The uniformity coefficient is the mesh size that passes 10% of
the sand divided by the mesh size that passes 60% of the
sand. - correct answer -False
8. Filter sand should be durable grains of siliceous material in the
hardness range of talc - correct answer -False
9. After washing with distilled water and allowed to settle, sand is
acceptable if the upper layer is clear and the surface is free of
floating material. - correct answer -True
10. Acid solubility should not exceed 50% by weight after
treatment with 5% HCL. - correct answer -False
, Page | 3
11. Prior to service, sand is prepared by backwashing the sand
bed once to create at least a 3% sand expansion. - correct
answer -False
12. Before a new filter is placed into service, the filter must be
chlorinated with a dosage of ________ mg/L and the chlorine
allowed to contact the filter at least ________ hours. - correct
answer -50 and 24
13. Crushed anthracite is often added to replace some of the
________. - correct answer -Sand
14. Advantages claimed for anthracite are higher filtration rates,
longer filter runs, less tendency to coat with ________, and
lower backwash velocity. - correct answer -Lime
15. Because of the density and general particle shape, filtration
characteristics of ________ are similar to ________. - correct
answer -Activated Carbon and Antracite
, Page | 4
16. The adsorption properties of activated carbon include taste
and odor-causing substances and impurities such as
________. - correct answer -Trihalomethanes
17. Particle size, carbon bed depth, filtration rate, and water
________ influence head loss. - correct answer -Temperature
18. Filter ________ supports the ________ or other filter
medium and distributes the wash water uniformly over the
underdrains. - correct answer -Gravel and Sand
19. The average gravel depth ranges from ________ inches. -
correct answer -6 - 24
20. High-density garnet sand, called the "________" layer,
supports the fine media and separates it from the gravel. -
correct answer -Barrier
21. Inspection of a filter bed is not part of a maintenance
program. - correct answer -False
