Class 6 Exam > Class 6 Questions > Which of the following mixtures cannot be sep...
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Which of the following mixtures cannot be separated by using water as solvent followed by filtration and evaporation?
- a)Sand and sulphur
- b)Salt and chalk powder
- c)Sand and sugar
- d)Blue vitriol and sand
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following mixtures cannot be separated by using water as ...
Sand is insoluble in water so it can be separated by filtration
sulphur is insoluble in water so it can be separated by evaporation
sulphur is insoluble in water so it can be separated by evaporation
Community Answer
Which of the following mixtures cannot be separated by using water as ...
Explanation:
To determine which mixture cannot be separated by using water as a solvent followed by filtration and evaporation, we need to consider the properties of the substances in each mixture.
a) Sand and sulphur:
- Sand is insoluble in water, so it can be separated by filtration.
- Sulphur is also insoluble in water, so it can be separated by filtration.
- After filtration, both sand and sulphur can be dried through evaporation.
b) Salt and chalk powder:
- Salt is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain salt.
- Chalk powder is insoluble in water, so it can be separated by filtration.
- After filtration, the chalk powder can be dried through evaporation.
c) Sand and sugar:
- Sand is insoluble in water, so it can be separated by filtration.
- Sugar is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain sugar.
- After filtration and evaporation, both sand and sugar can be obtained separately.
d) Blue vitriol and sand:
- Blue vitriol (copper sulfate) is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain blue vitriol.
- Sand is insoluble in water, so it can be separated by filtration.
- After filtration and evaporation, both blue vitriol and sand can be obtained separately.
Therefore, the mixture that cannot be separated by using water as a solvent followed by filtration and evaporation is sand and sulphur (option A). Both sand and sulphur are insoluble in water, so they can be separated by filtration, but they cannot be separated by evaporation as both are solids and do not dissolve in water.
To determine which mixture cannot be separated by using water as a solvent followed by filtration and evaporation, we need to consider the properties of the substances in each mixture.
a) Sand and sulphur:
- Sand is insoluble in water, so it can be separated by filtration.
- Sulphur is also insoluble in water, so it can be separated by filtration.
- After filtration, both sand and sulphur can be dried through evaporation.
b) Salt and chalk powder:
- Salt is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain salt.
- Chalk powder is insoluble in water, so it can be separated by filtration.
- After filtration, the chalk powder can be dried through evaporation.
c) Sand and sugar:
- Sand is insoluble in water, so it can be separated by filtration.
- Sugar is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain sugar.
- After filtration and evaporation, both sand and sugar can be obtained separately.
d) Blue vitriol and sand:
- Blue vitriol (copper sulfate) is soluble in water, so it can be separated by dissolving it in water and then evaporating the water to obtain blue vitriol.
- Sand is insoluble in water, so it can be separated by filtration.
- After filtration and evaporation, both blue vitriol and sand can be obtained separately.
Therefore, the mixture that cannot be separated by using water as a solvent followed by filtration and evaporation is sand and sulphur (option A). Both sand and sulphur are insoluble in water, so they can be separated by filtration, but they cannot be separated by evaporation as both are solids and do not dissolve in water.
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Which of the following mixtures cannot be separated by using water as solvent followed by filtration and evaporation?a)Sand and sulphurb)Salt and chalk powderc)Sand and sugard)Blue vitriol and sandCorrect answer is option 'A'. Can you explain this answer?
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