WorksheetsWater quality
Total questions: 15
Worksheet time: 7mins
These are the physical parameters of water quality except
turbidity
salinity
temperature
BOD
When DO drop below 5 mg/L, sensitive organisms can become stressed.
True
False
Higher COD levels mean a greater amount of oxidizable organic material in the sample
True
False
A higher BOD indicates high DO in water
True
False
These are the parameters used to calculate WQI except...
BOD
DO
Phosphorus
Ammoniacal nitrogen
Total Suspended solid
Which class of water is not suitable for recreational use?
Class I
Class IIa
Class IIb
Class III
The breakdown of degradable wastes by bacteria depletes dissolved oxygen and creates
oxygen sag curve
recovery zone
clear zone
BOD zone
This is not the effects of increasing nutrients in a lake...
oxygen depletion
eutrophication
aquatic organism die
increase in oxygen
Groundwater will not become contaminated because of
proper sanitary system
cow manures
overused of pesticides
leachate
Runoff of sewage and agricultural wastes into coastal waters introduce
algae growth
rainwater
surface runoff
oil spill
These are for water conservation except...
save water
conventional irrigation
recycle water
reuse water
Best practice in agriculture for water conservation
leave plant residue on soil ground
use drip irrigation
terraces
use semi treated sewage water for irrigation
A measurement of the total concentration of ions in water is
salinity
temperature
acidity
alkalinity
improved water quality can be achieved by
appropriate use of water
careful water storage and handling
proper land management
all of the above
the process by which water changes from liquid to a vapor
precipitation
evaporation
condensation
distillation
