Understanding the separation of substances is a crucial part of science in Class 6, particularly in Chapter 3. This topic helps students discover various methods to separate substances and understand its importance in our daily lives. For those seeking effective study materials, Separation of Substances Class 6 Questions with Answers is a great way to test your knowledge and prepare for exams. It includes a range of questions along with comprehensive answers for a better understanding of the topic.
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Lastly, for those who want to challenge themselves further, Separation of Substances Question Answer sections are perfect. They encourage students to apply what they have learned and to think critically. Explore the exciting world of science with Class 6 Science Chapter 3, and learn about the fascinating methods used in separating substances!
Separation of Substances Class 6
Q1. Why do we need to separate different components of a mixture? Give two examples.
Ans: Among different components of mixture there are many substances which are harmful or not useful for us. To remove
these harmful or unuseful components we need to separate them.
For example:
1. Tea leaves are separated from the liquid with a strainer while preparing tea.
2. Stone pieces from wheat, rice or pulses are picked out by hand.
Q2. What is winnowing? Where is it used?
Ans: Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. This process is
used by farmers to separate lighter husk particles from heavier seeds of grain.
Q3. How will you separate husk or dirt particles from a given sample of pulses before cooking?
Ans: Husk or dirt particles can be separated by winnowing, being lighter they will fly away from pulses.
Q4. What is Sieving? Where can it be used?
Ans: Sieving is a process by which fine particles are separated from bigger particles by using a sieve. It is used in flour mill
or at construction sites. In the flour mill, impurities like husks and stones are removed from wheat. Pebbles and stones are
removed from the sand by sieving.
Q5. How will you separate sand and water from their mixture?
Ans: We will separate sand and water by sedimentation and decantation method. First we leave this mixture for some
time. After some time, the sand which is; heavier is settled down at the bottom. After that we wall pour water into
another container and the mixture will be separated.
Q6. Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it?
Ans: Sugar can be separated from wheat flour by sieving. Due to difference in the size of particles, sugar will stay on sieve
and wheat flour will pass through it.
Q7. How would you obtain clear water from a sample of muddy water?
Ans: We will obtain clear water from a sample of muddy water by the process of filtration. A filter paper is one such filter
that has very fine pores in it. Figure (a, b) shows the steps involved in using a filter paper. A filter paper folded in the
form of a cone is fixed in a funnel. The mixture is then poured on the filter paper. Solid particles in the mixture do not
pass through it and remain on the filter
Q8. Fill up the blank:
The method of separating seeds of paddy from its stalks is called _______.
Ans: The method of separating seeds of paddy from its stalks is called threshing.
Q9. Fill up the blank:
When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of
separating cream from milk is an example of _______.
Ans: When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of
separating cream from milk is an example of filtration.
Q10. Fill up the blank:
Salt is obtained from seawater by the process of ___________.
Ans: Salt is obtained from seawater by the process of evaporation.
Q11. Fill up the blank:
Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured
off from the top. The process of separation used in this example is called ___________.
Ans: Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured
off from the top. The process of separation used in this example is called sedimentation and decantation.
Q12. True or false?
A mixture of milk and water can be separated by filtration.
Ans: False.
Q13. True or false?
A mixture of powdered salt and sugar can be separated by the process of winnowing.
Ans: False.
Q14. True or false?
Separation of sugar from tea can be done with filtration.
Ans: False.
Q15. True or false?
Grain and husk can be separated with the process of decantation.
Ans: False.
Q16. Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the
lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?
Ans: We should add ice after dissolving sugar. When the temperature is high then more sugar can be dissolved. After
mixing ice it gets cool and less sugar will dissolve in it.
FAQs'
1. What is the Separation of Substances?
The separation of substances refers to the process of separating two or more substances that are mixed together. This can be done using various methods depending on the type of substances involved.
2. Why is the Separation of Substances important?
It's important because in our daily lives, we often come across mixtures that need to be separated for various uses, like removing stones from rice, separating cream from milk, or purifying water.
3. What are some common methods of separating substances?
Some common methods include sieving, filtration, evaporation, sedimentation, and decantation. Each method is used based on the properties of the substances in the mixture.
4. What is sieving?
Sieving is a method used to separate particles of different sizes by passing them through a sieve with holes of a certain size.
5. How does filtration work?
Filtration separates solids from liquids using a filter paper that only allows the liquid to pass through, leaving the solid residue behind.
6. What is evaporation?
Evaporation is used to separate a soluble solid from a liquid. The liquid is evaporated, leaving the solid residue behind.
7. What is sedimentation and decantation?
Sedimentation involves allowing the heavier component of a mixture to settle down at the bottom, and decantation involves carefully pouring out the liquid without disturbing the sediment.
8. Can you provide some examples of Separation of Substances from everyday life?
Yes, examples include using a strainer to separate tea leaves from tea, using a water filter to purify drinking water, and using a sieve to separate flour from lumps.
9. What are the topics covered in Separation of Substances in Class 6?
The topics include different separation techniques, their applications, and understanding the properties of substances that make these techniques effective.
10. Where can I find resources for Separation of Substances Class 6?
Visit our website for all other resources on like Separation of Substances Class 6 worksheet with answer, Separation of Substances Class 6 notes and mind map.
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