Separation of substances Worksheet-3
Fill in The Blanks:
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The process of deliberately mixing food materials with cheap, unwanted harmful things is called ________.
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___ method is used to separate insoluble solids from liquids.
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________ process is used to separate pebbles and stones from sand at construction sites.
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In a solution of turmeric in water,_____ is solute.
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The ability of a substance to get dissolved in a given liquid is known as its ______.
Multiple-Choice Question:
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Filtration is a process used to separate:
(A) solid-solid mixture
(B) liquid-liquid mixture
(C) suspended solid-liquid mixture
(D) liquid-liquid mixture
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Which of the following process is used to remove sand from water?
(A) Sedimentation (B) Filtration
(C) evaporation (D) None of these
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In which of the following process a mixture is rotated at high speed?
(A) Evaporation (B) Filtration
(C) Distillation (D) Centrifugation
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The constituents of a mixture are present in:
(A) Fixed ratio (B) Can’t say
(C) Variable ratio (D) none of these
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A compound consists of:
(A) Only one kind of atom
(B) Only one kind of element
(C) A mixture of elements and molecules
(D) Only one kind of molecules
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In the distillation apparatus shown what are the parts labelled A and B?
(A) A=funnel, B=thermometer
(B) A=thermometer, B=Funnel
(C) A=Liebig condenser, B=thermometer
(D) A=Liebig condenser, B=Flask
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Mixtures of sand and water or sand and iron filings are:
(A) Heterogenous mixtures (B) Homogenous mixtures
(C) Can’t say
Answer key:
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food adulteration/Adulteration
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Evaporation
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Sieving
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Turmeric
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Solubility
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(C)
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(A)
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(D)
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(C)
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(C)
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(C)
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(A)