The following property is used to find the purity of a substance
Specific gravity
Volume
Temperature
Mass
The method that is used to separate water particles from cloths while drying in washing machines is
Magnetic separation
Filtration
Evaporation
Centrifugation
Suitable method to separate lighter impurities from a mixture.
Winnowing
Handpicking
During the sedimentation process, the clear liquid above the sediment is a called .........
residue
filtrate
supernatant liquid
none of the above
Iron particles from a heap of sand can be separated by,
sieving
winnowing
crystallisation
magnetic separation
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
A - Residue; B - Filtrate
A - Filtrate; B - Residue
A - Distillate; B - Filtrate
A - Residue; B - Distillate
Sedimentation can be used as a method to separate
a mixture of solids
soluble solids from liquids
Insoluble solids from liquids
Both (2) and (3)
........ method is used to separate solid substances dissolved in liquid.
Sedimentation
Decantation
In evaporation, water changes into
ice
oxygen
air
vapour
When muddy water was kept overnight in a bucket impurities settle
in the middle
at the top
at the bottom
in the zig-zag position
