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Question
A mixture contains sand, salt, pebbles and water. Which methods of separation can be used to obtain all of these components separately?
A mixture contains sand, salt, pebbles and water. Which methods of separation can be used to obtain all of these components separately?
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Solution
The correct options are
A Handpicking
B Filtration
C Condensation
D Evaporation
∙ Filtration is used for separating insoluble solids from a liquid. Sand and pebbles are insoluble in water, so, they can be removed by filtration. The filterate contains saltwater.
∙ After filtration, pebbles can be spearated from sand by handpicking as they are visibly different.
∙ Since, salt is soluble in water, it can be removed by evaporation. Water evaporates on heating leaving behind the salt.
∙ After the evaporation of water, water vapours can be condensed and collected separately.
A Handpicking
B Filtration
C Condensation
D Evaporation
∙ Filtration is used for separating insoluble solids from a liquid. Sand and pebbles are insoluble in water, so, they can be removed by filtration. The filterate contains saltwater.
∙ After filtration, pebbles can be spearated from sand by handpicking as they are visibly different.
∙ Since, salt is soluble in water, it can be removed by evaporation. Water evaporates on heating leaving behind the salt.
∙ After the evaporation of water, water vapours can be condensed and collected separately.
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