NCERT Class 6 Science Chapter 9 Solutions by PW: Methods of Separation in Everyday Life

From removing stones from grains to filtering water, separation methods are part of many everyday activities. Methods of Separation in Everyday Life explains why different mixtures require different methods depending on properties such as particle size, weight, solubility, and whether substances mix with each other.

The PW Class 6 Science Chapter 9 Solutions help you work through selected textbook questions and understand where different separation techniques are used. The questions below include examples involving rice, husk, oil and water, salt, flour, sawdust, and other familiar materials.

Methods of Separation in Everyday Life Solutions

Here are selected questions from the chapter. You can attempt them first and then use the given answers to check your understanding.

Question 1: A small amount of puffed rice is mixed with chana dal. Can you think of separating the mixture by any method other than handpicking?

Answer: Yes. The mixture can be separated by winnowing.

Question 2: Valli is unable to separate husk from rice in a closed room. How can you help her?

Answer: A fan can be used to blow air over the mixture. The lighter husk will be carried away by the moving air, helping separate it from the heavier rice grains.

Question 3: Have you ever observed white patches on dark-coloured clothes during hot summers? How are these patches formed?

Answer: These patches form when water from sweat evaporates and leaves salt behind on the clothes.

Question 4: Which method of separation would you use to separate oil and water?

Answer: Decantation can be used to separate oil and water because they form separate layers when left undisturbed.

Question 5: State whether the following statements are True (T) or False (F). Also, correct the false statements.

(i) Salt can be separated from salt solution by keeping it under the Sun.

Answer: True. Water evaporates, leaving the salt behind.

(ii) Handpicking should be used only when the quantity of one component is less.

Answer: True. It is easier to handpick when the component to be removed is present in a small quantity.

(iii) A mixture of puffed rice and rice grains can be separated by threshing.

Answer: False. Threshing is used to separate grains from stalks. The given mixture can be separated using handpicking or winnowing.

(iv) A mixture of mustard oil and lemon water can be separated by decantation.

Answer: True. The oil and water form separate layers that can be decanted.

(v) Sieving is used to separate a mixture of rice flour and water.

Answer: False. Filtration is used to separate rice flour from water.

Question 6: Match the mixtures in Column I with their method of separation in Column II.

Answer:

Question 7: In what situations would you use decantation instead of filtration to separate solids from liquids?

Answer: Decantation can be used when insoluble solid particles are heavier and settle at the bottom of a vessel. The liquid can then be poured off while leaving the solid residue behind.

Filtration, on the other hand, is used when insoluble particles do not settle down and remain spread throughout the liquid.

Question 8: Can you relate the presence of nasal hair to any separation process?

Answer: Nasal hair acts like a natural filter. It traps dust, pollen, and other particles from the air you breathe. This is similar to filtration, where unwanted solid particles are separated from another substance.

Class 6 Chapter 9 Solutions PDF

The Class 6 Science Chapter 9 Solutions PDF covers textbook questions from Methods of Separation in Everyday Life. It includes solutions based on handpicking, winnowing, sieving, churning, filtration, decantation, evaporation, condensation, and magnetic separation.

You can use the selected solutions above for focused practice and refer to the complete PDF for the remaining questions and activities.

Practise Class 6 Science with Complete PW Resources

After completing the Chapter 9 exercises, you can use these PW resources to continue your preparation:

• Class 6 Science Syllabus – Check the complete syllabus and organise your chapter-wise preparation.

• Class 6 Science Solutions – Access chapter-wise solutions and work through textbook exercises from other Class 6 Science chapters.

• Class 6 Science Notes – Revise separation methods and other important Science concepts.

• Class 6 Science Important Questions – Practise additional questions based on separation techniques and their everyday applications.

• Class 6 Science Sample Papers – Test Chapter 9 concepts along with questions from other chapters.

The PW Class 6 Science Chapter 9 NCERT Solutions help you understand not only the names of different separation methods but also how to choose the right method for a particular mixture. Working through everyday examples can make it easier to connect these techniques with their practical uses.

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