FE Civil Actual Exam 2025 Questions and
Verified Answers
ENVIRONMENTAL ENGINEERING (Water Quality)
Acidity in water is typically specified in terms of which of the following
1) H2 CO3
2)H+
3)OH-
4)CaCO3
CaCO3
ENVIRONMENTAL ENGINEERING (Water Quality)
The National primary drinking water regulations apply to every public water supply serving
at least how many service connections
1) 15
2) 50
3) 100
4) 250
1) 15
ENVIRONMENTAL ENGINEERING (Water Quality)
The molar nitrogen-to-phosphorus (N:P) ratio for ideal algae growth is which of the following
1) 10:1
2) 12:1
,3) 16:1
4) 18:1
16:1
ENVIRONMENTAL ENGINEERING (Water Quality)
In water, excess amounts of which of the following can contribute to methemoglobinemia
1) Phosphorus
2) Manganese
3) Carbonates
4) Nitrates
Nitrates
ENVIRONMENTAL ENGINEERING (Water Supply)
Primary treatment of wastewater consists of
1) chlorination
2) Removal of toxic industrial wastes
3). removing solids and particles of various sizes
3). removing solids and particles of various sizes
ENVIRONMENTAL ENGINEERING (Water Supply)
Which of the following diseases should be of concern to the environmental engineer
when designing, operating, or managing water supply projects (2+)
1) acquired immunodeficiency syndrome (AIDS)
2) Rocky Mountain spotted fever
3) botulism
4) tuberculosis
5) Hepatitas A
6) Legionnaires' desease
Hep A, Legionnaires' desease
, ENVIRONMENTAL ENGINEERING (Water Supply)
Which of the following substances are used to remove calcium and magnesium from
hard water (2+)
1) Lime
2) Soda Ash
3) Ozone
4) Activated Carbon
Lime and Soda Ash
ENVIRONMENTAL ENGINEERING (Water Supply)
Water is recarbonated after it has been softened to (2+)
1) Remove unwanted odors
2) lower PH
3) Improve taste
4) Reduce its scale-forming potential
Lower PH, Reduce scale forming potential
ENVIRONMENTAL ENGINEERING (Water Supply)
In addition to lime-soda treatment, what method can be used to reduce the hardness
of water
1) neutralizing alkalinity with hydrochloric acid
2) replacing calcium ions with sodium ions
3) adsorbing sodium and iron with granular activated carbon
4) flocculating the water with magnesium sulfate (MgSO4)
2) replacing calcium ions with sodium ions
ENVIRONMENTAL ENGINEERING (Water Supply)
Nonecarbonate hardness can be removed by which of the following (2+)
1) Heating
2) Distillation
Verified Answers
ENVIRONMENTAL ENGINEERING (Water Quality)
Acidity in water is typically specified in terms of which of the following
1) H2 CO3
2)H+
3)OH-
4)CaCO3
CaCO3
ENVIRONMENTAL ENGINEERING (Water Quality)
The National primary drinking water regulations apply to every public water supply serving
at least how many service connections
1) 15
2) 50
3) 100
4) 250
1) 15
ENVIRONMENTAL ENGINEERING (Water Quality)
The molar nitrogen-to-phosphorus (N:P) ratio for ideal algae growth is which of the following
1) 10:1
2) 12:1
,3) 16:1
4) 18:1
16:1
ENVIRONMENTAL ENGINEERING (Water Quality)
In water, excess amounts of which of the following can contribute to methemoglobinemia
1) Phosphorus
2) Manganese
3) Carbonates
4) Nitrates
Nitrates
ENVIRONMENTAL ENGINEERING (Water Supply)
Primary treatment of wastewater consists of
1) chlorination
2) Removal of toxic industrial wastes
3). removing solids and particles of various sizes
3). removing solids and particles of various sizes
ENVIRONMENTAL ENGINEERING (Water Supply)
Which of the following diseases should be of concern to the environmental engineer
when designing, operating, or managing water supply projects (2+)
1) acquired immunodeficiency syndrome (AIDS)
2) Rocky Mountain spotted fever
3) botulism
4) tuberculosis
5) Hepatitas A
6) Legionnaires' desease
Hep A, Legionnaires' desease
, ENVIRONMENTAL ENGINEERING (Water Supply)
Which of the following substances are used to remove calcium and magnesium from
hard water (2+)
1) Lime
2) Soda Ash
3) Ozone
4) Activated Carbon
Lime and Soda Ash
ENVIRONMENTAL ENGINEERING (Water Supply)
Water is recarbonated after it has been softened to (2+)
1) Remove unwanted odors
2) lower PH
3) Improve taste
4) Reduce its scale-forming potential
Lower PH, Reduce scale forming potential
ENVIRONMENTAL ENGINEERING (Water Supply)
In addition to lime-soda treatment, what method can be used to reduce the hardness
of water
1) neutralizing alkalinity with hydrochloric acid
2) replacing calcium ions with sodium ions
3) adsorbing sodium and iron with granular activated carbon
4) flocculating the water with magnesium sulfate (MgSO4)
2) replacing calcium ions with sodium ions
ENVIRONMENTAL ENGINEERING (Water Supply)
Nonecarbonate hardness can be removed by which of the following (2+)
1) Heating
2) Distillation
