BESC 320 Mid-term Exam Questions and
Answers
What is the reason for acid rain? - Answer -Chemical reactions such that NO and SO2
reacts with H2O
What are the major constituents of nutrients in natural water? - Answer -Nitrogen and
phosphorous
What is the normal pH of unpolluted rainwater? - Answer -5-6
Is chelation in wastewater a problem for water treatment or not? - Answer -Yes
Is decreasing pH good or bad for aquatic life? - Answer -Bad
The stream runs into a "fish kill" when the concentration of dissolved oxygen is - Answer
-1-2 mg/L
Which lake has a higher value of electrical conductivity? - Answer -Great Salt Lake
Which ecosystem do rivers and streams belong to? - Answer -Lotic
A private well is typically pulling water from - Answer -Ground water
What are the usages of water resources? - Answer -Industry, agriculture, domestic,
energy, and recreational
Which of the below uses the biggest percentage of accessible water? - Answer -
Irrigation
Which of the following is not domestic water usage? - Answer -Crop production
Hydropower generation is the only process that uses water in the energy section. -
Answer -Wrong
Wastewater from industrial operations is always treated appropriately - Answer -False
Disadvantages of groundwater withdraw. - Answer -Depletion of aquifers, land sinking,
hard to treat contamination
Answers
What is the reason for acid rain? - Answer -Chemical reactions such that NO and SO2
reacts with H2O
What are the major constituents of nutrients in natural water? - Answer -Nitrogen and
phosphorous
What is the normal pH of unpolluted rainwater? - Answer -5-6
Is chelation in wastewater a problem for water treatment or not? - Answer -Yes
Is decreasing pH good or bad for aquatic life? - Answer -Bad
The stream runs into a "fish kill" when the concentration of dissolved oxygen is - Answer
-1-2 mg/L
Which lake has a higher value of electrical conductivity? - Answer -Great Salt Lake
Which ecosystem do rivers and streams belong to? - Answer -Lotic
A private well is typically pulling water from - Answer -Ground water
What are the usages of water resources? - Answer -Industry, agriculture, domestic,
energy, and recreational
Which of the below uses the biggest percentage of accessible water? - Answer -
Irrigation
Which of the following is not domestic water usage? - Answer -Crop production
Hydropower generation is the only process that uses water in the energy section. -
Answer -Wrong
Wastewater from industrial operations is always treated appropriately - Answer -False
Disadvantages of groundwater withdraw. - Answer -Depletion of aquifers, land sinking,
hard to treat contamination
