Download and practise the Class 6 Science Chapter 9 worksheet on Methods of Separation in Everyday Life. Includes important questions, separation methods, MCQs, and answers.

Chapter 9 Worksheet

Methods of Separation in Everyday Life

Class VI Science – Curiosity

Student Details

Name:

Class: Section:

Roll No.: Date:

Section A – Fill in the Blanks

1. The process of removing components of a mixture is called __________.

2. A traditional tray used for winnowing is called a __________.

3. The separation of grains from harvested stalks is called __________.

4. The process in which heavier insoluble particles settle at the bottom is called __________.

5. Carefully pouring the clear liquid away from settled solids is called __________.

6. The solid retained by a filter is called the __________.

7. The liquid passing through a filter is called the __________.

8. Salt can be obtained from seawater by __________.

9. A material attracted by a magnet is called a __________ material.

10. Tiny openings in a sieve or filter are called __________.

Section B – Multiple Choice Questions

1. Which method is most suitable for removing visible stones from rice?

(A) Evaporation

(B) Handpicking

(D) Churning

2. Which method is commonly used to separate husk from grains?

(A) Winnowing

(B) Filtration

(D) Magnetic separation

3. Which property is mainly used in sieving?

(A) Colour

(B) Particle size

(D) Temperature

4. Which method can separate sand from water?

(A) Filtration

(B) Churning

(D) Threshing

5. Which method is useful for obtaining salt from salt water?

(A) Handpicking

(B) Sieving

(D) Winnowing

6. Which substance can be separated from sawdust using a magnet?

(A) Salt

(B) Iron

(D) Wood

7. Which method is commonly used to separate butter from curd?

(A) Churning

(B) Sieving

(D) Evaporation

8. What happens during sedimentation?

(A) Liquid changes into gas

(B) Heavy insoluble particles settle down

(D) Small particles pass through a sieve

9. Oil and water can be separated by:

(A) Threshing

(B) Decantation

(D) Handpicking

10. Which method would be unsuitable for separating dissolved salt from water?

(A) Evaporation

(B) Distillation

(D) Both A and B are suitable

Section C – True or False

1. Handpicking is useful when unwanted particles can be easily seen.

2. Winnowing requires moving air.

3. Sieving can separate particles of exactly the same size.

4. Filtration can remove dissolved salt from water.

5. Sedimentation involves settling of heavier insoluble particles.

6. Decantation can be used for oil and water.

7. A magnet can attract iron.

8. Evaporation leaves a dissolved solid behind when the solvent evaporates.

9. Threshing is mainly used to separate tea leaves from tea.

10. Traditional separation methods can use simple natural materials and forces.

Section D – Match the Following

Column A	Column B
1. Stones from rice	A. Evaporation
2. Husk from grains	B. Magnetic separation
3. Salt from seawater	C. Handpicking
4. Iron from sawdust	D. Winnowing
5. Sand from water	E. Filtration
6. Bran from flour	F. Churning
7. Butter from curd	G. Sieving

Section E – Identify the Method

1. A farmer separates wheat grains from harvested stalks.

2. A person removes small stones from pulses by looking at them and picking them out.

3. Flour is passed through a sieve to remove larger bran particles.

4. Muddy water is left undisturbed so that mud settles down.

5. The clearer water above settled mud is carefully poured into another vessel.

6. Tea leaves are removed using a strainer.

7. Salt is obtained from saline water after the water evaporates.

8. A magnet is used to remove iron pieces from a mixture.

9. Butter is collected after curd is continuously stirred.

Section F – Short Answer Questions

1. Why is separation necessary in our daily life?

2. When is handpicking a suitable method of separation?

3. Why does winnowing work better in the presence of moving air?

4. What is the difference between sedimentation and decantation?

5. What is the difference between a residue and a filtrate?

6. Why can filtration not normally separate dissolved salt from water?

7. Why is sieving useful at construction sites?

8. How does magnetic separation help in recycling?

Section G – Extra Practice Questions

1. A mixture contains rice grains and a few brightly coloured stones. Which method would you choose first? Give a reason.

2. Why would you not use handpicking to separate a large truckload of sand and stones?

3. Two students argue that winnowing and sieving are the same method. Do you agree? Explain.

4. What property of iron makes magnetic separation possible?

5. Why does mud settle at the bottom of water when the mixture is left undisturbed?

6. Why is a filter with unsuitable pore size sometimes ineffective?

7. Give one example where two separation methods are used one after another.

8. Why is distillation different from simple evaporation when recovering water from salt water?

9. Explain why oil forms a separate layer when mixed with water.

10. Give two examples of separation methods that you use at home.

Section H – Application Based Questions

1. A bowl contains wheat grains, husk and small stones. Suggest a suitable sequence of separation methods.

2. A student mixes sand, salt and water. How can the student recover both the sand and salt?

3. A mixture contains iron powder and sawdust. Which method will you use and why?

4. A glass contains muddy water. Describe two steps that can make the water clearer.

5. A shopkeeper wants to separate large unwanted particles from flour. Which method should be used?

Section I – Case Study 1: The Farmer’s Field

A farmer has harvested wheat. The grains are still mixed with pieces of stalk and husk. He wants to obtain cleaner grains before storing them.

1. Which method first helps separate grains from stalks?

2. Which method can then help separate lighter husk from heavier grains?

3. What role does moving air play?

Section J – Case Study 2: The Kitchen

Riya is preparing tea. She also needs to clean rice and later wants to separate butter from curd.

1. Which method can remove tea leaves from the prepared tea?

2. Which method can remove stones from rice?

3. Which method can help obtain butter from curd?

Section K – Case Study 3: Salt Water

A scientist has a container containing salt dissolved in water. The scientist wants to obtain the salt and also collect the water separately.

1. Can filtration separate the dissolved salt from water? Why?

2. Which method can recover the salt?

3. Which method can be used when both salt and water need to be recovered separately?

Section L – Case Study 4: Recycling Centre

A recycling centre receives a mixture containing iron pieces, plastic, paper and other waste materials.

1. Which method can help remove the iron pieces?

2. What property of iron is used?

3. Why is separation important before recycling materials?

Section M – Think and Reason

1. A mixture contains two solid substances of very different sizes. Which method would you test first?

2. A liquid contains an insoluble solid that settles quickly. Would you prefer decantation or filtration? Explain.

3. A student says, “If water looks clear after filtration, it must be completely pure.” Is this statement always correct?

4. Why might a separation method work well for one mixture but not for another?

5. Design a simple separation method for a mixture of iron filings and sand.

Section N – Arrange the Steps

Arrange the following steps in the correct order for separating salt and sand from a mixture containing both:

A. Filter the mixture.

B. Add water.

C. Evaporate the filtrate.

D. Collect the insoluble solid.

Arrange these steps for separating iron nails, stones, salt, sand and water:

A. Dissolve salt in water.

B. Use a magnet to remove iron.

C. Filter insoluble solids.

D. Remove large stones.

E. Evaporate water from the filtrate.

Section O – Odd One Out

1. Handpicking, Sieving, Winnowing, Evaporation

2. Iron, Magnet, Sand, Magnetic separation

3. Sedimentation, Decantation, Filtration, Threshing

4. Salt, Sugar, Sand, Water-soluble substances

Section P – Daily Life Challenge

Look around your home and identify at least five situations where separation is used.

Situation	Mixture	Method	Reason

Section Q – Mini Practical Activity

Activity: Separate a Simple Mixture

Take a safe mixture such as dry rice containing a few larger visible unwanted particles. Under adult or teacher supervision, decide which separation method is suitable.

Record:

Question	Your Observation
What was the mixture?
Which method did you select?
Which property was used?
What was separated?
Was the method successful?

Section R – Higher Order Thinking

1. Why is choosing the correct separation method more important than simply knowing many method names?

2. Can one mixture require more than one separation method? Give an example.

3. Explain how differences in physical properties help us separate mixtures.

4. A mixture contains salt, sand and iron filings. Design the most sensible sequence for separating all three components.

5. Why are traditional methods such as winnowing and churning still useful today?

Section S – Quick Revision Test

Question	Your Answer
Method used for stones from rice
Method used for grains from stalks
Method used for husk from grains
Method used for different-sized solids
Method used for insoluble solid and liquid
Method used for dissolved salt
Method used for iron and non-magnetic material
Method used for butter from curd

Answer Key

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Section A

1. Separation
2. Soop
3. Threshing
4. Sedimentation
5. Decantation
6. Residue
7. Filtrate
8. Evaporation
9. Magnetic
10. Pores

Section B

1. B
2. A
3. B
4. A
5. C
6. B
7. A
8. B
9. B
10. C

Section C

1. True
2. True
3. False
4. False
5. True
6. True
7. True
8. True
9. False
10. True

Section D

1-C, 2-D, 3-A, 4-B, 5-E, 6-G, 7-F

Section E

1. Threshing
2. Handpicking
3. Sieving
4. Sedimentation
5. Decantation
6. Filtration/straining
7. Evaporation
8. Magnetic separation
9. Churning

Section G – Suggested Answers

1. Handpicking, because the stones are visible and can be removed easily.

2. Handpicking would take too much time for a very large quantity. A suitable mechanical or size-based method would be more efficient.

3. No. Winnowing uses moving air, whereas sieving uses differences in particle size and sieve openings.

4. Iron is attracted to a magnet.

5. The heavier insoluble mud particles settle under the influence of gravity.

6. If the pore size is unsuitable, unwanted particles may pass through or the filter may become blocked.

7. Salt and sand can be separated by adding water, filtering the sand and evaporating the water from the salt solution.

8. Evaporation loses the water as vapour, whereas distillation collects the vapour after condensation.

9. Oil and water do not mix and form separate layers, with their arrangement influenced by density.

10. Examples include handpicking stones from rice and straining tea leaves from tea.

Section H – Suggested Answers

1. Threshing can separate grains from stalks, followed by winnowing to remove lighter husk. Handpicking can be used for visible stones if needed.

2. Filter the mixture to obtain sand as residue. Then evaporate the water from the filtrate to recover salt.

3. Use a magnet because iron is magnetic while sawdust is not attracted to the magnet.

4. Allow sedimentation and then carefully decant the clearer water. Further filtration may also be used.

5. Sieving.

Section I

1. Threshing
2. Winnowing
3. Moving air carries the lighter husk away more easily than the heavier grains.

Section J

1. Filtration or straining
2. Handpicking
3. Churning

Section K

1. No. Dissolved salt passes through an ordinary filter with the water.
2. Evaporation
3. Distillation

Section L

1. Magnetic separation
2. Magnetic property
3. It allows useful materials to be recovered and processed separately.

Section N

Salt and sand: B → A → D → C

Iron nails, stones, salt, sand and water: B → D → A → C → E

Section O

1. Evaporation
2. Sand
3. Threshing
4. Sand

Section S

Stones from rice – Handpicking
Grains from stalks – Threshing
Husk from grains – Winnowing
Different-sized solids – Sieving
Insoluble solid and liquid – Filtration
Dissolved salt – Evaporation
Iron and non-magnetic material – Magnetic separation
Butter from curd – Churning

Teacher’s Challenge

Can you create a mixture that requires three different separation methods?

Write the components, the sequence of methods and the scientific property used at each step.

Download Class 6 Science Chapter 9 Worksheet

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Class 6 Science Chapter 9 Worksheet – Methods of Separation in Everyday Life