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10 questions
Charcoal powder is insoluble in water. When water is filtered, the charcoal powder becomes the _______.
solute
residue
filtrate
solvent
This process allows the fine flour particles to pass through the holes of the strainer while the bigger impurities remain on the strainer. What is this process called?
What is the basis for separating the components of a mixture through distillation?
freezing point of the substances
room temperature
decaying period
boiling pint of the substances
Which of the following statements is NOT true about the image?
The process is called filtration.
A process known as sedimentation is important to make the separation possible.
The substance that passes through the filter paper is called the filtrate.
This method is used to separate insoluble solids from liquids.
When is manual separation applicable?
When the particles of the mixture are large enough to be seen clearly.
When the solutes in the mixture are totally dissolved by the solvent.
Only colloidal mixtures can be separated manually.
When the mixture is exposed to heat.
The image shows a mixture of concrete nails and saw dusts. What technique is best to use to separate the nails from the saw dusts?
sieving
chromatography
decantation
magnetic separation
Which of the following techniques is used to separate the components of a solution?
filtration
decantation
evaporation
physical manipulation
Dyes in water soluble markers may be separated by means of
Simple distillation
Crystallisation
Chromatography
Filtration
Which technique is shown in the image?
seiving
filtration
decanting
crystallization
The droplets of water that appear on the outside of a glass of cold water on a warm day are an example of?
sublimation
condensation
evaporation
sedimentation
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