What is the purpose of using a filter paper?

To separate very fine impurities

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

Name: Methods of Separation in Everyday Life – Class 6 Science
Uploaded: 2026-04-15
Description: This chapter explores how different methods like handpicking, sieving, winnowing, filtration, sedimentation, decantation, evaporation, magnetic separation, and churning are used in everyday life to separate substances based on their physical properties.

Class 6 Science

Last Updated: 15 April 2026

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Chapter Introduction

This chapter explores how different methods like handpicking, sieving, winnowing, filtration, sedimentation, decantation, evaporation, magnetic separation, and churning are used in everyday life to separate substances based on their physical properties.

हिंदी में (Hindi)

यह अध्याय विभिन्न विधियों जैसे कि हाथ से चुनना, छानना, फटकना, निस्यंदन (फिल्ट्रेशन), अवसादन (सेडिमेंटेशन), शमन (डिकैंटेशन), वाष्पीकरण, चुंबकीय पृथक्करण और मंथन के माध्यम से पदार्थों को उनकी भौतिक विशेषताओं के आधार पर अलग करने के तरीकों को समझाता है। ये सभी विधियाँ हमारे दैनिक जीवन में उपयोग की जाती हैं।

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Important Points

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Practice MCQ Questions (70 questions)

Q1. What do you use to make a cone for filtering?

Q2. What is placed inside a funnel for filtration?

Q3. What will you observe after filtering muddy water?

Q4. What remains as residue on the filter paper?

Q5. What do you collect in the conical flask after filtration?

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Frequently Asked Questions (FAQ)

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Tough Words (Glossary)

Winnowing

Meaning: Separating lighter particles from heavier ones using wind or air

अर्थ: पवनायन

"Farmers use winnowing to separate husk from grains."

Threshing

Meaning: Beating harvested crops to separate grains from stalks

अर्थ: मड़ाई

"Threshing separates grains from the stalks."

Handpicking

Meaning: Separating small impurities by hand

अर्थ: हाथ से चुनना

"They removed stones from rice by handpicking."

Mixture

Meaning: A substance made by combining two or more materials

अर्थ: मिश्रण

"Sand and salt together form a mixture."

Component

Meaning: One of the parts of a mixture

अर्थ: घटक

"Salt is a component of seawater."

Convenient

Meaning: Easy and useful

अर्थ: सुविधाजनक

"Handpicking is convenient for small impurities."

Curiosity

Meaning: Strong desire to learn or know something

अर्थ: जिज्ञासा

"Their curiosity led them to ask questions."

Fascinated

Meaning: Strongly attracted or interested

अर्थ: मोहित

"Children were fascinated by the huge grain piles."

Stalk

Meaning: The stem part of a plant that holds grains

अर्थ: डंठल

"The wheat stalks were drying in the sun."

Husk

Meaning: The outer covering of grains

अर्थ: भूसी

"The husk was blown away during winnowing."

Sieve

Meaning: A tool with holes to separate particles by size

अर्थ: चलनी

"Flour is filtered using a sieve."

Sieving

Meaning: Separating particles using a sieve

अर्थ: चलनी से छानना

"Sieving removes bran from flour."

Bran

Meaning: The outer layer of wheat grain

अर्थ: चोकर

"Bran is left behind after sieving."

Exposed

Meaning: Left open to air or sunlight

अर्थ: प्रकट/खुला हुआ

"Salt is obtained by keeping seawater exposed."

Evaporation

Meaning: Process of liquid changing into vapour

अर्थ: वाष्पीकरण

"Water evaporates from shallow pits."

Purification

Meaning: Process of removing impurities

अर्थ: शुद्धिकरण

"Salt is obtained after purification."

Remedy

Meaning: A treatment for an illness

अर्थ: उपचार

"Herbs are used as remedies in Ayurveda."

Facilitate

Meaning: To make an action easier

अर्थ: सुगम बनाना

"Drying facilitates evaporation of water."

Strainer

Meaning: A tool used to filter liquids

अर्थ: छन्नी/छलनी

"We use a strainer to remove tea leaves."

Sedimentation

Meaning: Process where heavier particles settle at bottom

अर्थ: अवसादन

"Mud settles down by sedimentation."

Decantation

Meaning: Pouring liquid gently to leave solids behind

अर्थ: अवलेपन

"We used decantation to separate water from sand."

Filtration

Meaning: Separating solids from liquids using a filter

अर्थ: निस्यंदन

"Filtration is used to clean muddy water."

Impurity

Meaning: An unwanted substance mixed in another

अर्थ: अशुद्धि

"Impurities are removed from drinking water."

Pores

Meaning: Small holes in a material

अर्थ: छिद्र

"Cloth has pores for filtration."

Charcoal

Meaning: A black substance from burnt wood

अर्थ: कोयला

"Charcoal can be used as a filter."

Gauze

Meaning: Thin loosely woven cloth

अर्थ: गॉज़

"Gauze can act as a simple filter."

Muslin

Meaning: Lightweight cotton fabric

अर्थ: मलमल

"Muslin was used to make tea bags."

Filter paper

Meaning: Special paper with tiny pores for filtering

अर्थ: फ़िल्टर कागज

"We used filter paper in the lab."

Mesh

Meaning: Net-like structure with holes

अर्थ: जाली

"Fish are caught in a mesh net."

Churning

Meaning: Stirring curd to separate butter

अर्थ: मंथन

"Churning curd separates butter from buttermilk."

Butter

Meaning: Fatty substance obtained from milk

अर्थ: मक्खन

"Butter floats after churning."

Buttermilk

Meaning: Liquid left after churning curd

अर्थ: छाछ

"Buttermilk is refreshing in summer."

Magnet

Meaning: An object that attracts iron

अर्थ: चुंबक

"They used a magnet to pick up nails."

Magnetic substance

Meaning: Material attracted by magnet

अर्थ: चुंबकीय पदार्थ

"Iron is a magnetic substance."

Magnetic separation

Meaning: Using magnet to separate substances

अर्थ: चुंबकीय पृथक्करण

"Magnetic separation removed iron nails."

Recycle

Meaning: To process waste to use again

अर्थ: पुनर्चक्रण

"Scrap iron can be recycled."

Scrap

Meaning: Waste pieces of material

अर्थ: कबाड़

"Scrap iron was collected from the heap."

Harvested

Meaning: Crops that have been cut and collected

अर्थ: कटाई किया हुआ

"Harvested wheat was lying in the fields."

Stirring

Meaning: Mixing by moving a spoon or stick

अर्थ: हिलाना/घोलना

"Stirring helps in dissolving sugar in tea."

Settled

Meaning: Came to rest at the bottom

अर्थ: जमा हुआ

"Mud settled at the bottom of the jar."

Undisturbed

Meaning: Left without touching or moving

अर्थ: अछूता/न छेड़ा हुआ

"Leave the tea undisturbed for a while."

Drains

Meaning: Allows liquid to flow away

अर्थ: निकासी

"Water drains out of the fishing net."

Impurities

Meaning: Unwanted particles in a substance

अर्थ: अशुद्धियाँ

"The filter removed impurities from water."

Expose

Meaning: To leave without cover

अर्थ: उजागर करना

"The seawater was exposed to sunlight."

Folk songs

Meaning: Traditional songs of people

अर्थ: लोकगीत

"Farmers sang folk songs while threshing."

Straw

Meaning: Dry stalk of grain plants

अर्थ: पराली/तिनका

"Straw is used for cattle feed."

Particles

Meaning: Tiny bits or pieces of matter

अर्थ: कण

"Sieving separates larger and smaller particles."

Substance

Meaning: A kind of matter with uniform properties

अर्थ: पदार्थ

"Salt is a substance dissolved in seawater."

Separation

Meaning: The process of dividing into parts

अर्थ: पृथक्करण

"Separation methods make mixtures useful."

← Previous

Ch 8: A Journey Through States of Water

Ch 10: Living Creatures

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

Chapter Introduction

Watch Video Lecture

Important Points

Practice MCQ Questions (70 questions)

Q1. What do you use to make a cone for filtering?

Q2. What is placed inside a funnel for filtration?

Q3. What will you observe after filtering muddy water?

Q4. What remains as residue on the filter paper?

Q5. What do you collect in the conical flask after filtration?

Q6. Which material can be used as a filter besides filter paper?

Q7. What type of particles do filters separate?

Q8. What were tea bags initially made from?

Q9. What do modern tea bags mostly consist of?

Q10. What happens when a fishing net is cast in water?

Q11. What similar method to filtration is used in fishing?

Q12. What did Malli see trapped in the fishing net?

Q13. Where did Malli and Valli visit after Puducherry?

Q14. What drink did Malli and Valli have at the dhaba?

Q15. What is the process of churning curd used to obtain?

Q16. What floats at the top during the churning process?

Q17. Where did Malli and Valli travel after Madhya Pradesh?

Q18. What happened to the iron nails in the sawdust?

Q19. What method did the carpenter use to separate the iron nails?

Q20. What type of substances are attracted towards a magnet?

Q21. What did the carpenter use to separate the nails from sawdust?

Q22. Where are magnets used to separate scrap iron?

Q23. What is the main purpose of using magnets in recycling?

Q24. What did Malli and Valli do during their holidays?

Q25. What is a common use of a magnet in industries?

Q26. What activity involves separating small stones from pulses?

Q27. What is the result of churning curd?

Q28. Which method is used to separate coconut pieces from rice flour?

Q29. Which method is used to separate oil from water?

Q30. Which method is used to separate salt from salt solution?

Q31. Why is handpicking done?

Q32. What are the basis of handpicking?

Q33. What process is used to separate grains from the stalks?

Q34. What is the method of separating heavier and lighter components by blowing air called?

Q35. What is the traditional tool used for winnowing?

Q36. What is used to separate bran from flour?

Q37. What happens when the salt solution is spread on black paper and dried?

Q38. How is salt obtained from seawater?

Q39. What is left behind after water evaporates from the china dish?

Q40. What does sieving remove from wheat flour?

Q41. Where did Malli and Valli visit their Nani?

Q42. What do farmers do to separate grains from stalks?

Q43. What process involves settling down of heavier insoluble component at the bottom of a liquid?

Q44. What is the next step after sedimentation to remove the liquid?

Q45. What is the name of the method that involves pouring liquid through a strainer to separate solids?

Q46. What do you observe when you blow on peanuts with removed skins?

Q47. What method uses a sieve to separate components?

Q48. What is the purpose of using a filter paper?

Q49. What do the farmers sing while working in the fields?

Q50. What type of bread did Valli request for the journey?

Q51. What are the grains of wheat attached to?

Q52. What did Valli do with the whole black peppers in her pulao?

Q53. What type of health system uses dried herbs as remedies?

Q54. What do you use to separate tea leaves from tea?

Q55. How are heavier components like sand separated from water?

Q56. What happens to salt when seawater is exposed to sunlight?

Q57. How is common salt obtained from the solid mixture after evaporation?

Q58. What is the main difference between sieving and handpicking?

Q59. Where did Malli and Valli visit after Haryana?

Q60. What do filters separate from liquids?

Q61. What happens to water when a fishing net is cast?

Q62. What unwanted items did Malli see in the fishing net?

Q63. What method is used to separate grains from husk?

Q64. Which metal is attracted to a magnet?

Q65. What did Malli and Valli learn during their trip?

Q66. What two things are obtained from churning curd?

Q67. What is the process of beating stalks to separate grains called?

Q68. How is bran removed from flour?

Q69. What traditional tool is used for winnowing?

Q70. What happens to water in the salt-making process?

Frequently Asked Questions (FAQ)

Tough Words (Glossary)

Winnowing

Threshing

Handpicking