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WorksheetsScience 6 First Unit Test
Total questions: 20
Worksheet time: 25mins
Which of the following is a mixture?
gold
salt
salad
sugar
Which of the following technique would you use to separate camphor from iron nails?
distillation
evaporation
filtration
magnetic separation
Which of the following ingredients are soluble in water?
cork
glass
oil
sugar
Which of the following mixtures could NOT be separated into its components by DECANTING?
beans in hot water
sand in water
rice in water
coffee in hot water
You've got a mixture of powdered sugar and cooking salt. What is the suitable separation technique for this mixture? Hint: the particles of cooking salt are much bigger than those of powdered sugar.
filtering
sieving
distillation
separation technique
What do you call the process that is used to separate grains from the main plant?
handpicking
threshing
sieving
winnowing
When do we usually use handpicking?
When we separate stones from rice
When we separate water from sand
when we separate sugar from water
ALL of the above
If we observe a construction site, what method of separation is used to attain very fine particles of sand?
handpicking
sieving
threshing
winnowing
Which method of separation should be used if we want to remove the clear liquid from the sediments?
sedimentation
decantation
sieving
threshing
You are asked to use any separation technique based on the difference in weights of the solids in a solid-solid mixture. Which of the following technique will you use?
Sieving
Handpicking
Threshing
Winnowing
Identify the applicable separation procedure on the following mixture.
Rice and water
(a)
Identify the applicable separation procedure on the following mixture.
Sand and gravel
(a)
Identify the applicable separation procedure on the following mixture.
Grains and husks
(a)
Identify the applicable separation procedure on the following mixture.
Camphor and iron fillings
(a)
Identify the applicable separation procedure on the following mixture.
Metals mixed with plastic and other materials in junkyards
(a)
How can you describe the given separation technique?
Threshing
Grains from plants parts are removed by beating it on
a hard surface.
Mixture having components of different particle size
that can be separated using sieve.
Mixture containing light and heavy components
where light impurities can be blown away by wind.
On heating, some solids change into vapors and can
be separated from a mixture.
How can you describe the given separation technique?
Winnowing
Grains from plants parts are removed by beating it on
a hard surface.
Mixture having components of different particle size
that can be separated using sieve.
Mixture containing light and heavy components
where light impurities can be blown away by wind.
On heating, some solids change into vapors and can
be separated from a mixture.
How can you describe the given separation technique?
Sublimation
Separate the liquid from the heavy insoluble solid by pouring the liquid into a separate container
Mixture having components of different particle size
that can be separated using sieve.
Mixture containing light and heavy components
where light impurities can be blown away by wind.
On heating, some solids change into vapors and can
be separated from a mixture.
How can you describe the given separation technique?
Sieving
Separate the liquid from the heavy insoluble solid by pouring the liquid into a separate container
Mixture having components of different particle size
that can be separated using a strainer
Insoluble heavy solids tend to settle at the bottom
of the liquid.
On heating, some solids change into vapors and can
be separated from a mixture.
How can you describe the given separation technique?
Sedimentation
Separate the liquid from the heavy insoluble solid by pouring the liquid into a separate container
Mixture having components of different particle size
that can be separated using a strainer
Insoluble heavy solids tend to settle at the bottom
of the liquid.
On heating, some solids change into vapors and can
be separated from a mixture.
