magnesium sulfate
Question 23
The final product in biochemical oxidation of ammonia yield:
a. nitride
b. nitrite
c. nitrate
d. nitrogen
nitrate
Question 24
Which contaminant in water is associated with methemoglobinemia?
a. zinc
b. lead
c. copper
d. nitrate
nitrate
Question 25
Which will cause taste and odor in water supplies?
a. coke oven emissions
b. oil refinery wastes
c. algae
d. all the above
all the above
Question 26
What statement concerning ozone is incorrect?
a. Ozone residual can last several hours
b. Ozone is faster disinfectant than chlorine
c. Ozone is more expensive than chlorine
d. All statements are correct
Ozone residual can last several hours
Question 27
Regulation of drinking water additives is the responsibility of:
a. FDA
b. EPA
c. Dept of Labor
d. PHS
EPA
, Question 28
Which conditions indicate organic stream pollution?
a. Water has foul odor and is turbid
b. Fish counts decrease or disappear
c. Increase in worms and snails
d. All the above
All the above
Question 29
Lakes having characteristics of being clean, high in DO, deep and receiving few nutrients:
a. Oligotrophic
b. Mesotrophic
c. Euphoric
d. Eutrophic
Oligotrophic
Question 30
Which organisms are most resistant to unfavorable environmental conditions and indicate past or possibly
intermittent pollution?
a. Fecal streptococci
b. Escherichia coli
c. Aerobacter aerogenes
d. Clostridium sporulates
Clostridium sporulates
Question 31
Algae development will cause all conditions except:
a. Reduced water clarity
b. Increased chlorine consumption
c. Rapid fall in pH
d. Slimy growth
Rapid fall in pH
Question 32
The presence of bacteria responsible for typhoid fever in a public water supply could be traced to:
a. Fecal contamination
b. Excessive water aeration
c. Pus from skin lesions
d. Rotting animal and fish remains
Fecal contamination
Question 23
The final product in biochemical oxidation of ammonia yield:
a. nitride
b. nitrite
c. nitrate
d. nitrogen
nitrate
Question 24
Which contaminant in water is associated with methemoglobinemia?
a. zinc
b. lead
c. copper
d. nitrate
nitrate
Question 25
Which will cause taste and odor in water supplies?
a. coke oven emissions
b. oil refinery wastes
c. algae
d. all the above
all the above
Question 26
What statement concerning ozone is incorrect?
a. Ozone residual can last several hours
b. Ozone is faster disinfectant than chlorine
c. Ozone is more expensive than chlorine
d. All statements are correct
Ozone residual can last several hours
Question 27
Regulation of drinking water additives is the responsibility of:
a. FDA
b. EPA
c. Dept of Labor
d. PHS
EPA
, Question 28
Which conditions indicate organic stream pollution?
a. Water has foul odor and is turbid
b. Fish counts decrease or disappear
c. Increase in worms and snails
d. All the above
All the above
Question 29
Lakes having characteristics of being clean, high in DO, deep and receiving few nutrients:
a. Oligotrophic
b. Mesotrophic
c. Euphoric
d. Eutrophic
Oligotrophic
Question 30
Which organisms are most resistant to unfavorable environmental conditions and indicate past or possibly
intermittent pollution?
a. Fecal streptococci
b. Escherichia coli
c. Aerobacter aerogenes
d. Clostridium sporulates
Clostridium sporulates
Question 31
Algae development will cause all conditions except:
a. Reduced water clarity
b. Increased chlorine consumption
c. Rapid fall in pH
d. Slimy growth
Rapid fall in pH
Question 32
The presence of bacteria responsible for typhoid fever in a public water supply could be traced to:
a. Fecal contamination
b. Excessive water aeration
c. Pus from skin lesions
d. Rotting animal and fish remains
Fecal contamination
