Class 6 Science — Chapter 9: Methods of Separation in Everyday Life

What you'll learn

• ▸Mixtures and the Need for Separation
• ▸Handpicking
• ▸Threshing
• ▸Winnowing
• ▸Sieving
• ▸Evaporation
• ▸Modern Agricultural Separation Machines

Chapter Summary

--- PAGE 1 --- साधु ऐसा चाहिए जैसा सूप सुभाय । सार सार को गहि रहै थोथा दई उड़ाय ॥ —कबीर Just like winnowing makes the husk blow away while retaining the grains, similarly, sages let the virtues stay while discarding the vices. —Kabir Malli and his sister Valli are excited for their summer vacations. Their parents have planned a trip to visit their relatives and friends living across India. They always stay in touch with their relatives and friends. Do you also keep in touch with your loved ones? Their first halt is at their Nani's (maternal grandmother's) house in Haryana. It is surrounded by large fields. Malli and Valli are fascinated by the variety of grains piled up in the courtyard. Their Mami (maternal aunt) and Mama (maternal uncle), along with other community members, are busy separating small stones and husk from the grains with their hands. Malli and Valli are curious to know why this is being done. Their Nani notices their curiosity and explai…

Practice Questions from this Chapter

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1. Explain different filtration techniques simply. Get Solution →
2. Describe modern machines for grain separation. Get Solution →
3. Compare various uses for sieving today. Get Solution →
4. What is the process of separating grains from stalks by beating them called? Get Solution →
5. Which method involves picking out substances like small stones from wheat or rice by hand? Get Solution →
6. What is the name of the process that uses wind or blowing air to separate heavier and lighter components of a mixture? Get Solution →
7. What is the traditional tool, described as a bamboo tray, used for winnowing? Get Solution →
8. What separation method is used when components of a solid-solid mixture have different sizes, like separating bran from flour? Get Solution →

Did you know?

• 💡 Rice is the most consumed staple food for over half of the world's population.
• 💡 Ancient Egyptians filtered wine using sieves made from woven reeds and plants.
• 💡 Some ancient wheat seeds can remain dormant for thousands of years before sprouting.
• 💡 Giant magnets are used in recycling plants to separate metals from trash.
• 💡 Winnowing, like gold panning, uses movement and density to find precious materials.

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