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Question 1 of 34
1. Question
A mixture of iodine and sand can be separated by:
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Question 2 of 34
2. Question
A mixture of tea leaves and iron filling can be separated by:
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Question 3 of 34
3. Question
A mixture of mustard oil and kerosene oil can be separated by:
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Question 4 of 34
4. Question
Insects are separated from wheat by:
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Question 5 of 34
5. Question
Larger quantity of salt can be dissolved in water by:
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Question 6 of 34
6. Question
……………….. cannot dissolve any amount of substances:
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Question 7 of 34
7. Question
To separate husk from grains in a field by
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Question 8 of 34
8. Question
the husk which is ………………., is carried away by the wind and forms a Separate heap at a short distance from the heap of grain,
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Question 9 of 34
9. Question
The grains which are fall vertically down on the ground,
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Question 10 of 34
10. Question
A method of separation used when the components of a mixture are of different sizes is known as:
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Question 11 of 34
11. Question
water is cleared by the process of loading.
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Question 12 of 34
12. Question
The method to separating seeds of paddy from its stalks is called:
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Question 13 of 34
13. Question
Common salt is then obtained from this mixture of salts by:
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Question 14 of 34
14. Question
Which types of filters are used to purify drinking water ?
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Question 15 of 34
15. Question
Give an example of where filtration is used at home.
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Question 16 of 34
16. Question
………………. is used in loading as it quickly dissolves in water.
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Question 17 of 34
17. Question
Give examples of substances used in daily life.
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Question 18 of 34
18. Question
Give an example of materials that require separation.
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Question 19 of 34
19. Question
Some times, threshing is done with the help of ………………….. cart.
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Question 20 of 34
20. Question
…………………. are also used to thresh large quantities of grain.
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Question 21 of 34
21. Question
Many substances contain only one type of constituent particles are called:
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Question 22 of 34
22. Question
A substance which consists two or more types of contituents which are present in any amount or any ratio is called:
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Question 23 of 34
23. Question
The process by which the undesirable components forming the mixture are removed to get a desirable component is called:
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Question 24 of 34
24. Question
A separation method which involves blowing of light particles by air is known as:
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Question 25 of 34
25. Question
The process of setting down of heavier insoluble particles from a mixture is called:
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Question 26 of 34
26. Question
The process of transferring clear liquid without disturbing sedimeption is known as:
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Question 27 of 34
27. Question
The process in which insoluble small suspended particles in a solution are made heavier to increase the rate of sedimentation of particles is called:
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Question 28 of 34
28. Question
The method of separation in which particles suspended in a liquid are rotated in a centrifuge machine and heavier particles settle down is called:
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Question 29 of 34
29. Question
The process of separation insoluble solid from a liquid by passing the liquid through a filter paper is known as:
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Question 30 of 34
30. Question
The process of separating any salt from its solution by removing water is called:
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Question 31 of 34
31. Question
The process in which a solid changes directly to gas without changing into liquid is known as:
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Question 32 of 34
32. Question
The process of separating a pure substance in the form of crystals from its hot saturated solution by cooling is called:
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Question 33 of 34
33. Question
The process of heating a liquid to form vapour and then cooling the vapour to get back the liquid is called:
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Question 34 of 34
34. Question
A solution is said to be saturated if it cannot dissolve more of substance in it by:
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