Chapter 26 :METHODS OF SEPARATION
Introduction
Threshing: Beating stalks to free grains
Winnowing: Separate lighter and heavier components of a mixture by blowing air.
Sieving: Separate components of different sizes by filter.
Sedimentation: Heavier component in a mixture settles after water is added.
Decantation:
When water is removed along with lighter component.
Filtration: Pass mixture through a filter paper.
Evaporation: Water is vaporized by sunlight.
Condensation: Water vapor cools down to water.
Quiz
Score more than 80% marks and move ahead else stay back and read again!
Q1:Beating stalks to free grains is
winnowing
threshing
sieving
filtration
Q2: Separate lighter and heavier components of a mixture by blowing air.
winnowing
threshing
filtration
none
Q3:When water is removed along with lighter component. it is
blowing
filtration
decantation
all
Q4: Heavier component in a mixture settles after water is added. is called
decantation
filtration
Sedimentation:
none
Q5:which is true
Water dissolves different amounts of soluble substances in it.
Water dissolves more of a substance by heating it.
both
none
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