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Question-1
A few coloured glass pieces that are big in size are mixed with sugar. The easiest way to separate them is:
(A)
Heat the mixture
(B)
Add the mixture to water
(C)
Handpick the glass pieces
(D)
Handpick the sugar particles
Question-2
To separate ammonium chloride from common salt, we use:
(A)
Filtration
(B)
Sedimentation
(C)
Sieving
(D)
Sublimation
Question-3
The process by which a solid changes directly into gas is called:
(A)
Decantation
(B)
Sublimation
(C)
Condensation
(D)
Sedimentation
Question-4
The following property is used to find the purity of a substance.
(A)
Specific gravity
(B)
Volume
(C)
Temperature
(D)
Mass
Question-5
Wheat flour is separated from wheat bran by the method of:
(A)
Hand picking
(B)
Sieving
(C)
Winnowing
(D)
Filtration
Question-6
The method that is used to separate water particles from cloths while drying in washing machines is:
(A)
Magnetic separation
(B)
Filtration
(C)
Evaporation
(D)
Centrifugation
Question-7
Identify the mixture from the following.
(A)
Carbon dioxide
(B)
Iron
(C)
Hydrogen
(D)
Air
Question-8
A mixture contains two solids A and B. Solid A is light in weight while solid B is very heavy. Their sizes are almost same. Here, A is the unwanted component. To get pure solid B, which separation method would you suggest ?
(A)
Sieving
(B)
Winnowing
(C)
Magnetic separation
(D)
Filtration
Question-9
Sieving can be used only when the components of the mixture have:
(A)
Different melting points
(B)
Different sizes
(C)
Different boiling points
(D)
Different specific gravities
Question-10
Which of the following is NOT a homogenous mixture?
(A)
Sugar solution
(B)
Salt solution
(C)
Iron fillings in sand
(D)
All of the above
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Cambridge Secondary Grade 6
IGCSE
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Changes Around Us
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Different Kind of Materials
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Components of Food
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Light, Shadow and Reflection
Separating Substances
Electric Current and Circuits
Waste Management
Air
Motion and Measurement of Distances
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