Separation of Substances Class 6 Quiz Question with Answer
Separation of Substances Class 6 Quiz Question with Answer. CBSE Class 6 Science Lesson 5 Mock Test.
(1) Which of the following is method of separation?
(a) Handpicking
(b) Threshing
(c) Winnowing
(d) All the above
Answer: – d) All the above
Explanation: – all of this given method is used for separation of mixed substances from each other.
(2) The process which is used to separate grains from stalks is called ______
(a) Handpicking
(b) Threshing
(c) sieving
(d) None of these
Answer: – b) Threshing
Explanation:-Threshing is only method which is used to separate grains from stalks.
Another methods handpicking and sieving are used to separate stones or impurity from the grains.
(3) Choose the correct statement?
(a) The process of conversion of water into its vapor is called evaporation.
(b) The process of conversion of water vapor into liquid from is called condensation.
(c) The method of separating components of a mixture is winnowing.
(d) All of these
Answer: – d) All of these.
Explanation: – All of the above statements are equally correct.
(4) The process of threshing is done with the help of
(a) Bullocks
(b) Machines
(c) both a and b
(d) None of the above
Answer: – c) both a and b
Explanation: – threshing is done by both methods traditional method using bullocks and new method by using machines.
(5) The method of separating components from mixture is called ____________
(a) Winnowing
(b) filtration
(c) both a and b
(d) None of above
Answer: – a) Winnowing
Explanation: – separation of components of a mixture is done by winnowing. In the process of winnowing the grains are separated from the dust and other waste particles of stalks in the grains, with the help of air.
Filtration is carried out when the mixture of the components is a liquid and a solid.
(6) Pebbles and stone are separate from grains by
(a) winnowing
(b) sieving
(c) threshing
(d) All the above
Answer: – b) sieving
Explanation: – sieving is the method in which two different sizes components can be separated by using the sieves.
Winnowing cannot be done for the separation of lighter material from the grains by using wind.
Threshing process is done for separating grains from the stalks.
(7) Which of the following method is done with the use of AIR?
(a) Threshing
(b) Winnowing
(c) Filtration
(d) Sieving
Answer : – b) winnowing
Explanation: – winnowing is the method used to separate the lighter impurity from the grains such as stalks and the sawdust remained in grains with the help of air. With the flow of air the lighter impurities blow away and fall aside, the heavier grains do not blow and fall below.
Other methods are not done by using air. Threshing is done using machines, filtration is done with filter paper, sieving is done using sieve.
(8) Separation of butter from milk by
(a) Filtration
(b) Churning
(c) Decantation
(d) All the above
Answer :- b) churning
Explanation: – churning method is used for the separation of butters form milk, the process of churning makes the butter float on the milk.
Filtration and decantation methods are not used for the separation of butter from milk.
(9) Which of the following components can separate by using the sedimentation and decantation process?
(a) water from sand
(b) sand from water
(c) both a and b
(d) none of the above
Answer: – c) both a and b
Explanation:-separating two components water and sand by sedimentation and decantation.
(10) Which of the following process is used for the conversion of water vapors into liquid?
(a) condensation
(b) evaporation
(c) sedimentation
(d) none of above
Answer: – a) condensation
Explanation: – condensation, is a process of conversion of water vapors into liquid, other two processes are not used for conversation of water vapors into the liquid.
(11) Separation of two components of a mixture is done by which of the following process?
(a) sedimentation
(b) decantation
(c) both a and b
(d) none of these
Answer: – c) both a and b
Explanation: – both a and b process can be used for the separation of two components of a mixture.
(12) Which of the following process is used for conversion of water into vapor —–
(a) condensation
(b) evaporation
(c) transpiration
(d) All the above
Answer: – b) evaporation
Explanation: – the conversion of water into vapor is done by using heat.
While the other processes are not used for conversion of water into vapors.
(13) The mixture of oil and water can be separated by which of the following process?
(a) decantation
(b) sieving
(c) filtration
(d) evaporation
Answer; – a) decantation
Explanation: – mixture of two immiscible liquid components, like oil and water can be separated by decantation process, by removing the upper layer.
(14) Which process is used for separate mixture of stones and water
(a) filtration
(b) evaporation
(c) churning
(d) condensation
Answer: – a) filtration
Explanation: – Filtration is the process which is used for separating mixture of one liquid and one solid component, by using a filter paper or cloth or strainer. Stones will remain on the strainer and water will be separated by filtration process.
(15) The process of obtaining salt from sea water is done with
(a) Evaporation
(b) Churning
(c) suspending
(d) None of the above
Answer: – a) Evaporation
Explanation: – common salt is obtained by the process of evaporation of sea water; salt is not obtained by churning or suspending process.
(16) The method of handpicking can be used for
(a) separating stones from grains
(b) separating grain from stalk
(c) separating water vapor
(d) heavy particle at the bottom
Answer: – a) separating stones from grains
Explanation: – by handpicking method only stones can be separated easily from the grain. Other options cannot be done with handpicking.