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Q 1.
More of a substance can be dissolved in a solution by?
Ans.
By Heating
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Q 2.
Name the process by which components of a sugar in a water can be separated?
Ans.
Crystallisation
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Q 3.
With the help of which Threshing can be done?
Ans.
1.Animals
2.Beating 3.Machines |
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Q 4.
Name the process by which butter is separated from milk?
Ans.
Churning
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Q 5.
If you want to prepare ghee from milk at home.What method do you adopt?
Ans.
Decantation and filtration
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Q 6.
What is the example of filtration method separation of rice from stone,salt in water,tea leaves from tea,oil in water?
Ans.
Tea leaves from tea
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Q 7.
A person is having some diseases and want to have Lassi with less fat. Which method should he adopt?
Ans.
Churning
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Q 8.
Why do we separate substances?
Ans.
Because sometimes it contains non-useful components.
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Q 9.
Two friend bought some vegetables such as egg plant,lady’s finger, green chillies, and potatoes all mixed in a bag. Which of the methods of separation would be most appropriate for her to separate them?
Ans.
Vegetables are big in size so hand picking is a best method to seperate them.
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Q 10.
Process of filtration can be used to separate in a mixture of insoluble?
Ans.
Liquid and solid
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Q 11.
In the process of evaporation liquid changes into?
Ans.
Vapours
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Q 12.
Name the process by which husk and stone could be separated from grain?
Ans.
Hand-picking
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Q 13.
Name the process by which two or more than two components are mixing together in any ratio?
Ans.
Mixing
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Q 14.
Name the process by which the heavier components in a mixture settles after water is added to it?
Ans.
Sedimentation
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Q 15.
Name the process that is used to separate components of a mixture having different sizes?
Ans.
Sieving
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Q 16.
Name the process that is used to separate heavier and lighter components of a mixture by wind or by blowing air?
Ans.
Winnowing
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Q 17.
Name the process by which tea leaves is separated from prepared tea?
Ans.
Filtration
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Q 18.
Name the process that is used to separate oil and water from a mixture?
Ans.
Decantation
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Q 19.
Name the process that is used to separate grains from stalks?
Ans.
Threshing
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Q 20.
Name the process by which salt is obtained from sea water?
Ans.
Evaporation
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