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Class 7
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Cleaning of Muddy Water
Cleaning of Muddy Water
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1)
The process in which suspended solid particles are separated from a liquid using material with fine pores
Threshing
Sedimentation
Decantation
Filtration
2)
The process of settling of the heavier component in a mixture
Filtration
Threshing
Decantation
Sedimentation
3)
The process of pouring out or removal of upper layer of liquid into another container
Decantation
Filteration
Threshing
Sedimentation
4)
Identify the process used for killing germs in water
filteration
winnowing
boiling
swirling of alum
5)
Treating the water with alum helps in
settling of fine particles
killing germs
settling of suspended particles
condensation of water
6)
The process of filtration is based on which of the following characteristics?
difference in mass of particles
difference in size of particles
difference in density of particles
difference in solubility of particles
7)
Two immiscible liquids can be separated by
threshing
decantation
sedimentation
filteration
8)
Which of the following cannot be used for filtering fine particles?
filter paper
skimmer
muslin cloth
sieve