NCERT Solutions Class 6th Science Chapter – 3 Separation of Substances Question & Answer

NCERT Solutions Class 6th Science Chapter – 3 Separation of Substances

TextbookNCERT
Class 6th
Subject Science
Chapter3rd
Chapter NameSeparation of Substances
Category Class 6th Science Question & Answer
Medium English
SourceLast Doubt
NCERT Solutions Class 6th Science Chapter – 3 Separation of Substances Question & Answer In this Chapter We Will read about Pure Substances, Solution And Solubility, Mixtures, Methods Of Separation, Homogeneous Mixtures, Hand-picking, Sedimentation and Churning etc. and More much. you have provided easy notes which use in your study make progress in education.

NCERT Solutions Class 6th Science Chapter – 3 Separation of Substances

Chapter – 3

Separation of Substances

Question & Answer

Q. 1. Why do we need to Separate Different Components of a Mixture? Give two Examples.
Answer – 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:
(a) Tea leaves are separated from the liquid with a strainer while preparing tea.
(b) Stone pieces from wheat, rice or pulses are picked out by hand.
Q. 2. What is Winnowing? Where is it used?
Answer – 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.
Q. 3. How will you Separate husk or dirt Particles from a given Sample of pulses before Cooking?
Answer – Husk or dirt particles can be separated by winnowing, being lighter they wall fly away from pulses.
Q. 4. What is Sieving? Where is it used?
Answer –  Sieving is a process by which fine particles are separated from bigger particles by using a sieve. It is used in flour mills or at construction sites. In flour mills, impurities like husks and stones are removed from wheat. Pebbles and stones are removed from sand by sieving.
Q. 5. How will you Separate Sand and Water From their Mixture?
Answer –  We will separate sand and water by the 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 will pour water into another container and the mixture will be separated.
Q. 6. Is it Possible to Separate Sugar Mixed With Wheat Flour? If yes, how will you do it?
Answer – Sugar can be separated from wheat flour by sieving. Due to the difference in the size of particles, sugar will stay on a sieve and wheat flour will pass through it.
Q. 7. How Would you Obtain Clear Water From a Sample of Muddy Water?
Answer – 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 5.12(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.
Q. 8. Fill up the blanks:
(a) The Method of Separating Seeds of Paddy From its Stalks is Called ______.
(b) 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 ________.
(c) Salt is Obtained from Seawater by the process of ______ .
(d) 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 _____.

Answer – 
(a) Threshing
(b) Filtration
(c) Evaporation
(d) Sedimentation and Decantation
Q. 9. True or false?

(a) A Mixture of Milk and Water can be Separated by Filtration.
Answer – False

(b) A Mixture of Powdered Salt and sugar can be Separated by the Process of Winnowing.
Answer – False

(c) Separation of Sugar From tea can be done with Filtration.
Answer – False

(d) Grain and husk can be Separated with the process of Decantation.
Answer – False
Q. 10. 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?
Answer –  We should add ice after dissolving the 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.
NCERT Solutions Class 6th Science All Chapters Question & Answer
Chapter 1 – Components of Food
Chapter 2 – Sorting Materials Into Groups
Chapter 3 – Separation of Substances
Chapter 4 – Getting to Know Plants
Chapter 5 – Body Movements
Chapter 6 – The Living Organisms Characteristics and Habitats
Chapter 7 – Motion and Measurement of Distances
Chapter 8 – Light Shadows and Reflection
Chapter 9 – Electricity and Circuits
Chapter 10 – Fun with Magnets
Chapter 11 – Air Around Us
NCERT Solutions Class 6th Science All Chapters Notes
Chapter 1 – Components of Food
Chapter 2 – Sorting Materials Into Groups
Chapter 3 – Separation of Substances
Chapter 4 – Getting to Know Plants
Chapter 5 – Body Movements
Chapter 6 – The Living Organisms Characteristics and Habitats
Chapter 7 – Motion and Measurement of Distances
Chapter 8 – Light Shadows and Reflection
Chapter 9 – Electricity and Circuits
Chapter 10 – Fun with Magnets
Chapter 11 – Air Around Us
NCERT Solution Class 6th Science All Chapter’s MCQ
Chapter 1 – Components of Food
Chapter 2 – Sorting Materials Into Groups
Chapter 3 – Separation of Substances
Chapter 4 – Getting to Know Plants
Chapter 5 – Body Movements
Chapter 6 – The Living Organisms Characteristics and Habitats
Chapter 7 – Motion and Measurement of Distances
Chapter 8 – Light Shadows and Reflection
Chapter 9 – Electricity and Circuits
Chapter 10 – Fun with Magnets
Chapter 11 – Air Around Us

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