MCQ on Methods of Separation in Everyday Life Class 6
Class 6 Science Chapter 9 MCQ Methods of Separation in Everyday Life
Multiple Choice Questions
Choose the correct option:
Question 1.
Methods of separation of components from a mixture are ____.
(a) only one
(b) only two
(c) only three
(d) many
Answer:
(d) manyz
Question 2.
Method of separation of grains from stalks is ____.
(a) winnowing
(b) threshing
(c) handpicking
(d) sieving
Answer:
(b) threshing
Question 3.
The process of separation of tea leaves by strainer is called____.
(a) filtration
(b) sedimentation
(c) evaporation
(d) condensation
Answer:
(a) filtration
Question 4.
The process of conversion of water into vapour is called ______.
(a) evaporation
(b) condensation
(c) both of them
(d) none of these
Answer:
(a) evaporation
Question 5.
In which of the following separation technique, the informble particles get filtered as residue?
(a) Sedimention
(b) Filtration
(c) Churning
(d) Handpicking
Answer:
(b) Filtration
Question 6.
Neeta bought some vegetables such as french beans lady’s finger, green chilies, tomatoes and potatoes all mixed in a bag. Which of the following method are used to separate them?
(a) Sieving
(b) Winnowing
(c) Handpicking
(d) Threshing
Answer:
(c) Handpicking
Question 7.
Sonu’s grandmother is suffering from diabetes. The doctor advised her to take Lassi with less fat content. Which of the following method are used to prepare it?
(a) Filtration
(b) Churning
(c) Decantation
(d) Winnowing
Answer:
(b) Churning
Question 8.
Which of the following mixtures would you be able to separate using the method of filtration?
(a) Salt in water
(b) Oil in water
(c) Cornfiakes in milk
(d) Sugarin milk
Answer:
(c) Cornfiakes in milk
Question 9.
Which amongest the following methods would be used to separate grains from bundles of stalks?
(a) Winnowirig
(b) Handpicking
(c) Threshing
(d) Sieving
Answer:
(c) Threshing
Question 10.
While preparing chapatis, Sneha found that the flour to be used was mixed with wheat grains.
The following is the suitable method to separate the grains from the flour?
(a) Sieving
(b) Filtration
(c) Threshing
(d) Winnowing
Answer:
(a) Sieving
Question 11.
A solid dissolved in water which one of the following methods car. be used to separate it ?
(a) Evaporation
(b) Sedimentation
(c) Filtration
(d) Decantation
Answer:
(a) Evaporation
Question 12.
The process of settling down of the particles of an insoluble solid in a liquid is called
(a) Sieving
(b) Winnowing
(c) Decantation
(d) Sedimentation
Answer:
(c) Decantation
Question 13.
The property which forms the basis of winnowing is
(a) difference in size
(b) difference in shape
(c) difference in weight
(d) difference in colour
Answer:
(c) difference in weight
Question 14.
A mixture of tea-leaves and ironfilings can be separated by
(a) filtration
(b) sieving
(c) hand-picking
(d) magnet
Answer:
(d) magnet
Question 15.
In cashewnut factories, cashewnuts of different sizes are separated by the process of
(a) sieving
(b) winnowing
(c) loading
(d) handpicking
Answer:
(a) sieving
Question 16.
When rice and pulses are washed with water before cooking, then the water is separated from them by the process of :
(a) Evaporation
(b) Sedimentation
(c) Decantation
(d) Filtration
Answer:
(c) Decantation
Question 17.
The process of separation of tea leaves by strainer is called :
(a) filtration
(b) evaporation
(c) sedimentation
(d) condensation
Answer:
(a) filtration
Question 18.
Common salt is recovered from seawater by the process of :
(a) filtration
(b) evaporation
(c) sieving
(d) winnowing
Answer:
(b) evaporation
Question 19.
A mixture of common salt and sand is separated by :
(a) evaporation
(b) sedimentation
(c) dissolution, filtration, evaporation
(d) dissolution, decantation, evaporation
Answer:
(c) dissolution, filtration, evaporation
Question 20.
Kerosene and water can be separated from the mixture by
(a) filtration
(b) decantation
(c) threshing
(d) sieving
Answer:
(b) decantation
Question 21.
Extremely small suspended particles can be separated from a liquid by :
(a) decantation
(b) sedimentation
(c) filteration
(d) loading
Answer:
(b) sedimentation
Question 22.
Which of the following mixtures cannot be separated by using water as solvent followed by filtration and evaporation?
(a) Sand and sugar
(b) Sand and sulphur
(c) Salt and chalk powder
(d) Sand and Salt
Answer:
(b) Sand and sulphur
Assertion-Reason Type Questions
Directions (Q. No. 1 to 5): The question below consists of an Assertion (A) and a Reason (R).
Use the following key to choose the appropriate answer.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A): Separation of coconut. pieces from rice flour is done by seiving.
Reason (R): Rice flour being by fine in size passes out from the sieve.
Answer:
(a) Both A and R are true and R is the correct explanation of A.
Question 2.
Assertion (A): When we wash pulses in water before using it for cooking, the process of sedimentation and decantation is being used.
Reason (R): Pulses being lighter than water, is decanted off.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Question 3.
Assertion (A): A mixture is a material made by mixing two or more substances.
Reason (R): The components of a mixture do not retain their original characteristics.
Answer:
(c) A is true but R is false.
Question 4.
Assertion (A): The constituents of a mixture do not lose their original properties.
Reason (R): Particle’s size, density, melting point, boiling point of constituents get changed in a mixture.
Answer:
(c) A is true but R is false.
Question 5.
Assertion (A): The choice of the method of separation used depends upon the nature or the properties of the constituent substances present in the mixture.
Reason (R): Various methods used in separating materials are handpicking, winnoving and sieving:
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true and (R) is not the correct explanation of (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
Question 1.
Assertion (A) : Sieving of wheat flour is not considered good for health.
Reason (R) : During sieving, the useful roughage is lost from the flour.
Answer:
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
Question 2.
Assertion (A) : The common salt dissolved in water can be separated by the process of evaporation.
Reason (R) : Conversion of liquid into vapours is called evaporation.
Answer:
(b) Both (A) and (R) are true and (R) is not the correct explanation of (A).
Question 3.
Assertion (A) : We cannot separate small stone particles from wheat by the process of winnowing.
Reason (R): Stone particles are quite heavy.
Answer:
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
Question 4.
Assertion (A) : Evaporation is the process in which a liquid gets converted into its vapour.
Reason (R) : It can be used to extract butter from curd.
Answer:
(c) (A) is true but (R) is false.
Question 5.
Assertion (A) : Threshing is the method of separating husk from grains with the help of wind.
Reason (R) : Winnowing is used to separate husk from various types of grains.
Answer:
(d) (A) is false but (R) is true.
Fill in the Blanks
Complete the following with a suitable word/words:
1. Cream is separated from milk by ______
Answer:
churning
2. Common salt is obtained from sea water by ________
Answer:
evaporation
3. Husk is separated from rice by ______
Answer:
winnowing
4. The method used to settle down the suspended particles in muddy water is called ________
Answer:
sedimentation
5. Small pieces of stone can be removed from rice by _________
Answer:
hand picking
6. ________ are obtained from stalks by threshing.
Answer:
grains
7. Husk from wheat flour is generally removed by _________
Answer:
winnowing
8. The process of setting of heavier particles is called _________
Answer:
sedimentation
9. Filtration is helpful in separating an insoluble _________ from a ______
Answer:
matter, mixture
10. Cream is separated from milk by _________.
Answer:
Churning
11. Peas are separated from a mixture of peas and white gram by _________ .
Answer:
Handpicking
12. A filter paper is used for separating _________ solid particles from a _________.
Answer:
insoluble, liquid
13. _________ is the method of separating husk from grains with the help of wind.
Answer:
winnowing
14. Salt is obtained from sea-water by the process of _________.
Answer:
evaporation
15. Insects can be separated from wheat by _________.
Answer:
Handpicking
16. A mixture of iron filings and sulphur powder can be separated by using _________.
Answer:
magnet
17. The process of separating solids from a mixture based on variations in particle size using a sieve is called _________.
Answer:
sieving
18. The cashewnuts of different sizes are separated in cashewnut factories by the process of _________.
Answer:
sieving
19. The deposition of a solid matter at the bottom of a liquid is called _________.
Answer:
sedimentation
True/False
Write ‘true’ or ‘false’ against the statements given below:
1. The mixture of honey and water can be separated by the process called sedimentation.
Answer:
False
2. Salt cannot be obtained from sea water by evaporation method.
Answer:
False
3. We can obtain paneer from milk by adding a few drops of lemon juice to milk and then filtering the mixture through a strainer
Answer:
True
4. Two liquids that do not mix with each other can be separated by decantation.
Answer:
True
5. We can separate butter from milk by churning method.
Answer:
True
6. A mixture of oil and water can be separated by filtration.
Answer:
False
7. Water can be separated from salt by evaporation.
Answer:
True
8. A mixture of wheat grains and wheat flour can be separated by magnet.
Answer:
False
9. A mixture of iron filing and rice flour can be separated by sieving.
Answer:
True
10. A mixture of wheat grains and rice flakes can be separated by winnowing.
Answer:
True
11. A mixture of tea leaves and milk can be separated by decantation.
Answer:
False
12. A salt from its solution in water can be recovered by evaporation.
Answer:
True
13. Wood is a magnetic substance.
Answer:
False
14. Churning is used for obtaining butter from curd.
Answer:
True
15. Quickening of sedimentation of clay particles by adding a small quantity of alum to the muddy water is called loading.
Answer:
True
16. Tiny pieces of stone are usually separated from pulses before cooking by the method called winnowing.
Answer:
False
17. Iodine can be recovered from its mixture of iodine by the process of filtration.
Answer:
True
18. Sand and sugar mixture can be separated by using water as solvent followed by filtration and evaporation.
Answer:
True
19. At water treatment works, the river water or lake water is filled by using sand filters.
Answer:
True
20. Kerosene and petrol can be separated by decantation.
Answer:
False
21. In a flour mill, the impurities are removed from wheat before grinding, by the process of handpicking.
Answer:
False
Match the Following
Match the following items given in column A with those in column B.
Question 1.
| Column A | Column B |
| (a) The method of separating slightly larger sized impurities. | (i) Winnowing |
| (b) The process that is used to separate gram from stalks. | (ii) Evaporation |
| (c) The method used to separate heavier and lighter components from a mixture. | (iii) Condensation |
| (d) The process of conversion of water into its vapour | (iv) Handpicking |
| (e) The process of conversion of water vapour into its liquid. | (v) Threshing |
Answer:
| Column A | Column B |
| (a) The method of separating slightly larger sized impurities. | (iv) Handpicking |
| (b) The process that is used to separate gram from stalks. | (v) Threshing |
| (c) The method used to separate heavier and lighter components from a mixture. | (i) Winnowing |
| (d) The process of conversion of water into its vapour | (ii) Evaporation |
| (e) The process of conversion of water vapour into its liquid. | (iii) Condensation |
Question 2.
Match the mixture in column A with their method of separation in Column B.
| Column A | Column B |
| (a) Oil mixed in water | (i) Handpicking |
| (b) Salt mixed with water | (ii) Sieving |
| (c) Lady’s finger mixed with french beans | (iii) Magnet |
| (d) Iron powder mixed with flour | (iv) Decantation |
| (e) Rice flour mixed with kidney beans | (v) Evaporation |
Answer:
| Column A | Column B |
| (a) Oil mixed in water | (iv) Decantation |
| (b) Salt mixed with water | (v) Evaporation |
| (c) Lady’s finger mixed with french beans | (i) Handpicking |
| (d) Iron powder mixed with flour | (iii) Magnet |
| (e) Rice flour mixed with kidney beans | (ii) Sieving |
Quiz Time
Question 1.
Why do we need to separate substances?
Answer:
We separate things to get useful components or to remove non-useful components.
Question 2.
Name the method used to separate semolina flour from rice grains.
Answer:
Seiving
Question 3.
Name the method used to extract butter from curd.
Answer:
Churning
Question 4.
Name the process used to separate cream from curd.
Answer:
Churning
Question 5.
Name the device which is used to separate liquid from a solid.
Answer:
Strainer or sieve
Question 6.
Which method is used to separate the pieces of stone from grains?
Answer:
Handpicking or sieving
Question 7.
What is the opposite method of evaporation?
Answer:
Condensation
Question 8.
Write the name of the method by which we get salt from the ocean water.
Answer:
Evaporation
Question 9.
How can we separate grain from stalks?
Answer:
Threshing
Question 10.
You are given a mixture of salt and sand. Can you separate them by handpicking?
Answer:
No, we cannot separate it by handpicking
Self-Assessment:
Question 1.
Ravi’s grandmother is suffering from diabetes. The doctor advised her to take Lassi with less fat content.
Which of the following method are used to prepare it?
(a) Filtration
(b) Churning
(c) Decantation
(d) Winnowing
Question 2.
Which of the following mixtures would you be able to separate using the method of filtration?
(a) Salt in water
(b) Oil in water
(c) Cornfiakes in milk
(d) Sugar in milk
Question 3.
Which amongst the following methods would be used to separate grains from bundles of stalks?
(a) Winnowing
(b) Handpicking
(c) Threshing
(d) Sieving
Question 4.
Assertion (A): When we wash pulses in water before using it for cooking, the process of sedimentation
and decantation is being used.
Reason (R): Pulses being lighter than water, is decanted off.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 5.
Match the following items given in column A with those in column B.
| Column A | Column B |
| (i) The method of separating slightly larger sized impurities. | (a) Winnowing |
| (ii) The process that is used to separate grain from stalks. | (b) Evaporation |
| (iii) The method used to separate heavier and lighter components from a mixture. | (c) Condensation |
| (iv) The process of conversion of water into its vapour. | (d) Handpicking |
| (v) The process of conversion of water vapour into its liquid. | (e) Threshing |
(A) (i)—(d), (ii)—(e), (iii)—(a), (iv)—(b), (v)—(c)
(B) (i)—(a), (ii)—(b), (iii)—(c), (iv)—(e), (v)—(d)
(C) (i)—(a), (ii)—(b), (iii)—(c), (iv)—(c), (v)—(e)
(D) (i)—(d), (ii) – (a), (iii)—(b), (iv)—(c), (v)—(e)
Question 6.
What is a strainer?
Question 7.
Which method is used to separate components of a mixture of mangoes and apples.
Question 8.
What do you mean by handpicking?
Question 9.
What type of materials can we separate by handpicking?
Question 10.
Define the term condensation.
Question 11.
Classify the mixtures and give examples of each.
Question 12.
What do you mean by threshing? Where is it used?
Question 13.
How will you separate water and oil from their mixture?
Question 14.
Write the differences between evaporation and condensation.
Question 15.
Explain the method used to obtain salt from sea water.
Question 16.
How will you prepare paneer?
Question 17.
What is a filter paper? Explain it with the help of a neat diagram.
Question 18.
Why do we need to separate different components of a mixture? Give two examples.
Question 19.
Differentiate between sedimentation and decantation.
Question 20.
Name the process through which we can separate two components of a mixture. Define processes
involved.
Question 21.
Explain with the help f two examples where decantation is used.
Question 22.
Name and describe briefly a method which can be helpful in separating a mixture of husk from grains.
What is the principle of this method?
Question 23.
Describe the stepwise method used to separate each component from a mixture of iron nails, sand,
salt, water.