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WorksheetsWater and pollution
Total questions: 25
Worksheet time: 14mins
Which of the following can cause eutrophication?
Cleaning up waterways
Using solar energy
Using nuclear energy
Runoff of excessive fertilizer and nutrients
How many people in the world are living in regions with water scarcity?
700 million people in 43 countries
4.3 billion people in the world
8 million in 50 countries
None of them
Which of the following is not a natural cause of water pollution?
Volcanoes
Animal waste
Oil spills
Silt from storms and floods
Holding about one-fifth of the world's freshwater, what is the deepest lake in the world?
North America's Lake Superior
Africa's Lake Chad
Russia's Lake Baikal
Africa's Lake Tanganyika
The Portion of water that flows across the surface that does not soak into the ground and runs into water bodies
Fertilizer
Erosion
Runoff
Drought
97% of the worlds water resources are found as
Fresh water
Salt water
Icecaps and glaciers
Groundwater
It is a test used to determine the presence of microorganisms in water.
Test for Nitrates
pH test
Coliform test
Test for ions
What percentage of the earth's fresh water is easily accessible on the surface?
0.3%
3%
13%
33%
Identify the region that experiences physical water scarcity.
Northern Europe
Southwest Australia
Southeast Asia
Indonesia
The diagram to the right depicts a profile of soil with groundwater and a layer of impenetrable bedrock underneath (D). What is the area labeled as A?
Zone of saturation
Zone of aeration
The water table
None of these
What is the upper layer of the groundwater saturated zone?
water table
surface run off
aquifer
sedimentation
How many people the world do not have access to safe drinking water?
100 thousands
100 millions
1.1 billions
NOT
How much water does one city dweller use per day just by taking a shower, flushing the toilet, washing dishes and clothes, etc.?
2 - 5 litres
100 - 300 litres
1000 - 1500 litres
2000 - 3000 litres
What is the estimated number of people globally without access to a safe water supply?
400 million
4 billion
1 billion
2 billion
Which of the following techniques is used to determine the concentration of odour compounds in the given water sample?
Settling
Flushing
Stripping
Chlorination
Which of the following can be considered to be the primary source of pathogens in the water bodies?
Industrial wastage
Domestic sewage
Petroleum
All of the these
Which of the following is true about groundwater pollution?
i) Arsenic and fluoride are the most common inorganic pollutants of groundwater pollution
ii) Nitrate is the most common chemical contaminant of groundwater
i
ii
Both
NOT
Which of the following diseases is caused by nitrate poisoning in water?
Minamata disease
Methemoglobin
Blue baby syndrome
NOT
Why is heat called a pollutant of water?
i) It causes water to boil, thus animals cannot drink it simultaneously
ii) It causes water temperature to rise thus reducing the concentration of oxygen
i
ii
Both
NOT
Which option would be the most appropriate solution for a high income country?
Spill over ponds
Desalination plants
Terracing
Sediment trapping
During water treatment, this step adds bacteria to decompose organic matter
Screening
Primary treatment
Secondary treatment
Tertiary treatment
It is safe if water makes a good tasting cup of tea.
True
False
Bioremediation involves using of
Microbes to destroy environmental pollutants
Microbes to create new organisms
Anaerobic bacteria to develop new antibiotics
Aerobic bacteria to produce new vaccines
Factors causing shortage of water are
Population
Deforestation
Setting up industries
All
The continuous process by which water is circulated throughout the earth through various processes.
Precipitation
Condensation
Evaporation
Water cycle
