GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mixing the mixture with water and then filtering it. Then evaporate the water from the resulting liquid.
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Mixing the mixture with sand and then filtering it. Then evaporate the sand from the resulting solid
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Mixing the mixture with hydrogen gas and then filtering it. Then evaporate the solids out.
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None of the above.
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Detailed explanation-1: -Solvent extraction-The soluble solid dissolves in the solvent and the insoluble solid is left behind, and they are separated. Filtration-insoluble solid is left behind in the filter.
Detailed explanation-2: -The evaporation is based on the different boiling point of the component. The boiling point of soluble solid differs from the boiling point of solvent. Therefore, evaporation technique is used to separate the soluble solid from its solution. Therefore, this option is correct.
Detailed explanation-3: -Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )
Detailed explanation-4: -Evaporation is used to separate a soluble solid from a liquid. For example, if we boil a saltwater solution, the water will evaporate and the salt will be left behind.