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Question-1
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-2
Which method is used to separate a mixture of two or more gases?
(A)
Sedimentation
(B)
Liquefaction
(C)
Distillation
(D)
Decantation
Question-3
A pure substance is made up of:
(A)
Two or more kinds of molecules
(B)
Only one kind of molecules
(C)
Different types of molecules
(D)
Different kind of gases
Question-4
Wheat flour is separated from wheat bran by the method of:
(A)
Hand picking
(B)
Sieving
(C)
Winnowing
(D)
Filtration
Question-5
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-6
Some iron fillings are mixed with sand. We can separate them using magnetic separation method. This method is applicable only when:
(A)
Magnetic substances are mixed up with non magnetic substances
(B)
Magnetic substances are mixed up with magnetic substances
(C)
Magnetic substances are heated beyond their curie temperatures
(D)
Two magnetic substances have equal melting points
Question-7
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
Question-8
To separate ammonium chloride from common salt, we use:
(A)
Filtration
(B)
Sedimentation
(C)
Sieving
(D)
Sublimation
Question-9
Which of the following mixtures will be the most difficult to separate?
(A)
Iron filings + sand
(B)
Sand + water
(C)
Saw dust + stones
(D)
Nitrogen + hydrogen
Question-10
The process by which a solid changes directly into gas is called:
(A)
Decantation
(B)
Sublimation
(C)
Condensation
(D)
Sedimentation
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Cambridge Secondary Grade 6
IGCSE
Practice in Related Chapters
Sources of Food
Fibre to Fabrics
The Habitat of the Living
Body Movements in Animals
Things Around Us
Changes Around Us
Plants-Form and Function
Different Kind of Materials
Water
Components of Food
Fun with Magnets
Light, Shadow and Reflection
Separating Substances
Electric Current and Circuits
Waste Management
Air
Motion and Measurement of Distances
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