Here we are providing Class 6 science Objective Chapter – 5 Separation of Substances because its very important for Class 6 students as we all know that every board exam question has MCQs so that students should practice these questions so that students can get good marks in board. Class 6 science Objective Chapter – 5 Separation of Substances is an extremely important and its also a year in which students learn the fundamentals of concepts that help them lay a solid foundation for their higher education. Here we are providing in Class Class 6 science Objective Chapter – 5 Separation of Substances 59+ questions so that students practice more and more. If you want class wise Notes Then Click Here
Class 6 Science Objective Chapter – 5 Separation of Substances
1. Butter is separated from milk by
( A ) sedimentation
( B ) filtration
( C ) churning
( D ) decantation
Ans – ( C )
2. The process that is used for separating slightly larger sized impurities like stone , husk from wheat etc is called _____ ?
( A ) Threshing
( B ) Handpicking
( C ) Winnowing
( D ) Sieving
Ans – ( B )
3.Mixtures need to be separated because
( A ) to remove undesirable substances
( B ) to get desirable substances
( C ) to obtain highly pure substances
( D ) all of the above
Ans – ( D )
4. Filtration is a method to separate the components of a
( A ) solution
( B ) mixture of a liquid and an insoluble substance correct
( C ) both ( A ) and (b)
( D ) pure substance
Ans – ( D )
5. The process that used to separate grain from stalks etc is called _____ ?
( A ) Threshing
( B ) Handpicking
( C ) Winnowing
( D ) Sieving
Ans – ( A )
6. Threshing is done by
( A ) beating
( B ) bullocks
( C ) machines
( D ) all of these
Ans – ( D )
7. The method of separating heavier and lighter components of mixture by blowing air is called _____?
( A ) Threshing
( B ) Handpicking
( C ) Winnowing
( D ) Sieving
Ans – ( C )
8.A solid is dissolved in water. Which one of the following methods can be used to separate it?
( A ) Filtration
( B ) Decantation
( C ) Distillation
( D ) Evaporation
Ans – ( D )
9.Petroleum contains
( A ) petrol
( B ) methanol
( C ) oil
( D ) water
Ans – ( A )
10. Which method is used to separate pebbles and stones from sand?
( A ) Handpicking
( B ) Winnowing
( C ) Sieving
( D ) Any of these
Ans – ( C )
11. The method of separating bigger inpurities from sand by the sieve is called _____ ?
( A ) Threshing
( B ) Handpicking
( C ) Winnowing
( D ) Sieving
Ans – ( D )
12. The components of a solution (say sugar in water) can be separated by
( A ) filtration
( B ) evaporation
( C ) sedimentation
( D ) decantation
Ans – ( B )
13.Which of the following method is used when there is a difference in size and colour of desirable and undesirable constituents?
( A ) Handpicking
( B ) Threshing
( C ) Filtration
( D ) Decantation
Ans – ( A )
14. When the heavier component in a mixture settles after adding water , the process is called ______?
( A ) Sedimentation
( B ) Handpicking
( C ) Winnowing
( D ) Decantation
Ans – ( A )
15. Sand from water is separated by
( A ) sieving
( B ) evaporation
( C ) filtration
( D ) sedimentation and decantation
Ans – ( D )
16. The process of removing water from a mixture is called _____ ?
( A ) Filtration
( B ) Handpicking
( C ) Decantation
( D ) Sedimentation
Ans – ( C )
17. The process of conversion of water vapours into liquid is called
( A ) condensation
( B ) decantation
( C ) sedimentation
( D ) evaporation
Ans – ( A )
18.The components of a solution of sugar in water can be separated by
( A ) filtration
( B ) crystallisation
( C ) decantation
( D ) sedimentation
Ans – ( B )
19. The process of conversion of water into its vapours is called
( A ) Evaporation
( B ) condensation
( C ) guttation
( D ) transpiration
Ans – ( A )
20. The process of conversion of water into its vapour is called _____ ?
( A ) Filtration
( B ) Evaporation
( C ) Decantation
( D ) Sedimentation
Ans – ( B )
21.At water treatment plants, the river water is filtered by using
( A ) filter paper
( B ) porcelain filters
( C ) cloth filters
( D ) sand filters
Ans – ( D )
22. A mixture of ammonium chloride and sand is separated by
( A ) evaporation
( B ) decantation
( C ) sublimation
( D ) filtration
Ans – ( C )
23. The process of conversion of water vapour into its liquid form is called _____ ?
( A ) Filtration
( B ) Evaporation
( C ) Condensation
( D ) Sedimentation
Ans – ( C )
24. The property which forms the basis of sieving
( A ) difference in weight
( B ) difference in colour
( C ) difference in shape
( D ) difference in size
Ans – ( D )
25.The process of separating grains from the stalks is called
( A ) handpicking
( B ) threshing
( C ) decantation
( D ) evaporation
Ans – ( B )
26. Seed is separated of paddy from its stalks by the process of ______ ?
( A ) Threshing
( B ) Handpicking
( C ) Winnowing
( D ) Sieving
Ans – ( A )
27.The process of conversion of water into vapour is called
( A ) condensation
( B ) evaporation
( C ) sedimentation
( D ) decantation
Ans – ( B )
28.A mixture of iodine and sand can be separated by:
( A ) Decantation
( B ) Centrifugation
( C ) Filtration
( D ) Sublimation
Ans – ( D )
29.The process of separation of tea leaves by strainer is called
( A ) filtration
( B ) sedimentation
( C ) evaporation
( D ) condensation
Ans – ( A )
30.Which of the following mixtures cannot be separated by using water as solvent followed by filtration and evaporation?
( A ) Sand and sugar
( B ) Salt and chalk powder
( C ) Sand and sulphur
( D ) Blue vitriol and sand
Ans – ( C )
31.A mixture of tea leaves and iron filling can be separated by:
( A ) Filtration
( B ) Evaporation
( C ) Separating funnel
( D ) Magnet
Ans – ( D )
32.The property which forms the basis of sieving is
( A ) difference in weight
( B ) difference in colour
( C ) difference in shape
( D ) difference in size
Ans – ( D )
33.Insects are separated from wheat by:
( A ) Hand picking
( B ) Sieving
( C ) Magnet
( D ) None of these
Ans – ( A )
34.When no more salt dissolves in water at a particular temperature, then the solution at that temperature is called
( A ) unsaturated
( B ) saturated
( C ) supersaturated
( D ) none of these
Ans – ( B )
35.Larger quantity of salt can be dissolved in water by:
( A ) Heating
( B ) Coaling
( C ) Icing
( D ) None of these
Ans – ( A )
36.The separation of insoluble solids from liquids can be done by
( A ) sedimentation
( B ) decantation
( C ) loading
( D ) all of these
Ans – ( A )
37……………….. cannot dissolve any amount of substances:
( A ) Solid
( B ) Water
( C ) Gas
( D ) Vapour
Ans – ( B )
38.An example of a heterogeneous mixture is
( A ) fresh air
( B ) fresh water
( C ) sugar solution
( D ) dirty water
Ans – ( D )
39………….. is a convenient method of separation.
( A ) Handpicking
( B ) Threshing
( C ) Winnowing
( D ) Sieving
Ans – ( A )
40.The separation technique used to separate a solid‐solid mixture is ____.
( A ) Decantation
( B ) Evaporation
( C ) Filtration
( D ) Handpicking
Ans – ( D )
41.To separate husk from grains in a field by
( A ) Tailor
( B ) Grocer
( C ) Watchman
( D ) Farmers
Ans – ( D )
42. Methods used to separate a mixture of salt and sand is by treating the mixture with water and then:
( A ) Filtration followed by evaporation
( B ) Sedimentation followed by evaporation
( C ) Filtration followed by condensation
( D ) None of the above.
Ans – ( A )
43.Thresher machines are also used to thresh large quantities of ……………..
( A ) grain
( B ) sugar
( C ) salt
( D ) sand
Ans – ( A )
44.the husk which is ………………., is carried away by the wind and forms a Separate heap at a short distance from the heap of grain,
( A ) Heavier
( B ) Lighter
( C ) Stronger
( D ) None of these
Ans – ( B )
45.A separation funnel is a ……….. bulb to the stem of which is fitted a stopcock.
( A ) wooden
( B ) copper
( C ) glass
( D ) steel
Ans – ( C )
46. When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of ___________.
( A ) Hand picking
( B ) Filtration
( C ) Churning
( D ) Sedimentation
Ans – ( B )
47.The grains which are fall vertically down on the ground,
( A ) Heavier
( B ) Lighter
( C ) Stronger
( D ) None of these
Ans – ( A )
48.Distillation is a method of obtaining pure …………….. from a solution.
( A ) liquid
( B ) solid
( C ) gas
( D ) all of them
Ans – ( A )
49.Some times, threshing is done with the help of ………………….. cart.
( A ) goat
( B ) bullock
( C ) cow
( D ) camel
Ans – ( B )
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