Which of the following is the diffused source of water pollution?
Spills
Agricultural run-off
Municipal Sewage
None of the above
Which of the following is a sign of organic water pollution?
pH
BOD
Salinity
Eutrophication
The main source of Arsenic in water is-
Fertilizers
Floods
Industrial Waste
Both (A) and (C)
Which of the following metal is a water pollutant and causes sterility in humans?
As
Mn
Mg
Hg
Identify the correct group of diseases caused by polluted water.
Cholera, Cancer, Typhoid
Hepatitis, Polio, Cholera
Polio, Tuberculosis, Hepatitis
Typhoid, Cholera, Cancer
Which of the following does not occur when sewage is discharged into water?
Change in color and odor
Change in pH
Increase in DO
Increase in BOD
Effects of water pollutants are:
Food chain breakdown
Water - borne diseases
Disturbance in ecosystem
All of the above
Major factors affecting Ganga pollution is/are:
Industrial effluents
Sewage
Agricultural run-off
All of the above
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