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Importance of Water
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Importance of Water
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Importance of Water
The removal of particles settled at the bottom of a tank is called
coagulation
sedimentation
filtration
chlorination
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Importance of Water
At treatment plant, raw water is mixed with alum and lime, it is called
coagulation
sedimentation
filtration
chlorination
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Importance of Water
Desalinated and distilled water is mostly used in
North America
South America
Middle East
East Asia
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Importance of Water
The soil and sand is settled at the bottom in
metal screen
grit tank
sludge tank
filter bed
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Importance of Water
Desalination plant is very expensive because it
uses a large amount of fuel
is built on mountains and high lands
uses electric machinery for desalination
is built with expensive material
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Importance of Water
The percentage of salty water is
0.8
0.9
0.95
0.97
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Importance of Water
As the water evaporates, due to cold air it
drops back
condenses
turns into liquid
turns in gas
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Importance of Water
Water can be kept pure if we throw
litter in the trash
litter near a stream
litter near a pond
pour waste oil in rivers
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Importance of Water
The unwanted substance of water may be harmful for
plants
animals
plants, animals and people
plants and people
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Importance of Water
The water we use comes from
rain and ice
rain and seas
oceans and rivers
all of above
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