FDEP Water Treatment C Exam
2024/2025 Exam Questions with 100%
Correct Answers | Latest Update
Units that combine coagulation, Flocc, & sedimentation into a single basin
are: - 🧠ANSWER ✔✔Solid contact units
Valves that operate 90 degrees open to shut are: - 🧠ANSWER
✔✔Eccentric and butterfly
Which of the following methods is best for determining the depth of water in
a clearwell: - 🧠ANSWER ✔✔bubbler
Chlorine expands approximately how many times from liquid to gas? -
🧠ANSWER ✔✔450
According to the safe water drinking act, the basic definition of public water
supply system is any water system that supplies water for human
consumption that serves: - 🧠ANSWER ✔✔15 service connections or over
25 persons for over 60 days a year
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,Normally calcium and magnesium ions are expressed as ________ when
dealing with softening. - 🧠ANSWER ✔✔CaCo3
The water in the I-95 elevated tank has a temperature of 15 degrees
Celsius, the PH is 8.7, pressure gauge is reading 52psi, cl2 residual is
3.8mg/l how many feet is the water tank?
52ft
15ft
38ft
120ft - 🧠ANSWER ✔✔120ft = (2.31x52)
What is the logarithm of the reciprocal the the hydrogen ion activity?
Acidic solution
Ph
standard solution
molar solution - 🧠ANSWER ✔✔Ph
What is the detention time in minutes for a basin that is 15th in diameter
and 12ft deep and treats a flow of .532 mgd?
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
, 48 min.
487 min
42.9 min
27.53 min - 🧠ANSWER ✔✔42.9 D = volume / flow
Name two reserve flow conditions that cause back-flow in a distribution
system.
water hammer and air gap
vacuum breaker and back sihponage
back-pressure and backflow
back-pressure and back siphonage - 🧠ANSWER ✔✔back-pressure and
back siphonage
The nephlometric method of measuring turbidity is based on:
scattering of light
transmission of light
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions with 100%
Correct Answers | Latest Update
Units that combine coagulation, Flocc, & sedimentation into a single basin
are: - 🧠ANSWER ✔✔Solid contact units
Valves that operate 90 degrees open to shut are: - 🧠ANSWER
✔✔Eccentric and butterfly
Which of the following methods is best for determining the depth of water in
a clearwell: - 🧠ANSWER ✔✔bubbler
Chlorine expands approximately how many times from liquid to gas? -
🧠ANSWER ✔✔450
According to the safe water drinking act, the basic definition of public water
supply system is any water system that supplies water for human
consumption that serves: - 🧠ANSWER ✔✔15 service connections or over
25 persons for over 60 days a year
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,Normally calcium and magnesium ions are expressed as ________ when
dealing with softening. - 🧠ANSWER ✔✔CaCo3
The water in the I-95 elevated tank has a temperature of 15 degrees
Celsius, the PH is 8.7, pressure gauge is reading 52psi, cl2 residual is
3.8mg/l how many feet is the water tank?
52ft
15ft
38ft
120ft - 🧠ANSWER ✔✔120ft = (2.31x52)
What is the logarithm of the reciprocal the the hydrogen ion activity?
Acidic solution
Ph
standard solution
molar solution - 🧠ANSWER ✔✔Ph
What is the detention time in minutes for a basin that is 15th in diameter
and 12ft deep and treats a flow of .532 mgd?
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
, 48 min.
487 min
42.9 min
27.53 min - 🧠ANSWER ✔✔42.9 D = volume / flow
Name two reserve flow conditions that cause back-flow in a distribution
system.
water hammer and air gap
vacuum breaker and back sihponage
back-pressure and backflow
back-pressure and back siphonage - 🧠ANSWER ✔✔back-pressure and
back siphonage
The nephlometric method of measuring turbidity is based on:
scattering of light
transmission of light
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
