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WorksheetsI am thanos
Total questions: 16
Worksheet time: 15mins
SELECT AN INCORRECT REASON FOR SEPARATING COMPONENTS OF A MIXTURE.
To remove pure or harmless components
To obtain pure sample of a substance
To separate two or more different but useful components
To remove undesirable and useless components
no.
Richard Jobi Thomas bought some vegetables such as french beans, lady's finger, green chillies, brinjals and potatoes all mixed in a bag. Which of the following methods of separation would be most appropriate for him
to separate them?
Sieving
Hand Picking
Winnowing
Threshing
no.
Which among these following methods would be the most appropriate to separate grains from bundles of stalks?
Handpicking
Winnowing
Sieving
Threshing
no.
Winnowing is helpful only when
Two solids have different melting points
Two solids have different weight
Two solids have different boiling points
Two solids have magnetic properties
no.
State true or false.
Nimmy thought grain seeds are much smaller than mangoes, so plucking them from their stalks would be impossible.
(a)
State true or False
-Separation of components of a mixture is not a useful process.
(a)
TRUE OR FALSE!!!!!!!11111
-Paddy stalks are dried in the sun before the grains are separated. (direct question so no complain -_- )
(a)
TRUE OR FALSE!!!!!!!!!!11111
Solids can be separated from other solids by winnowing, hand picking, and sieving.
(a)
What is this huh?
Threshing
Winnowing
Sieving
Hand Picking
What is this Huh?
(a)
The process of settling down of particles of a solid in a liquid is
Sublimation
Sedimentation
Filtration
Decantation
While preparing chapatis, Vandana found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?
Threshing
Sieving
Winnowing
Filtration
Which separation technique uses the apparatus shown in the diagram?
filtration
evaporation
distillation
chromatography
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