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Class 6 Science Chapter 5 Separation Of Substances Quiz 5 (60 MCQs)

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1. How do we separate grains from stalks?
2. Which of the following is NOT a bad conductor of heat?
3. Salt and Sugar can be separated out by
4. The process by which gas changes into liquid is
5. In an activity, a teacher dissolved a small amount of solid copper sulphate in a tumbler half filled with water. Which method would you use to get back solid copper sulphate from the solution?
6. Best method to remove husk from seed or grains
7. State whether true /false. Immiscible liquids form different layers due to the difference in density of the liquids.
8. The substance that does not sublime
9. Iron powder mixed with flour is in the magnetic process.
10. Common salt is ..... in water.
11. Winnowing is done with the help of
12. A solution is said to be ..... if it cannot dissolve more of the substance in it.
13. Separating funnel is used for separation of two miscible liquid. True of false?
14. Abeer was trying to recover water from salt and water solution, which of the following techniques shall he use?
15. A mixture of ammonium chloride and sand is separated by
16. Kashvi is writing some notes for her science exam. Tell which one of the statement is correct.
17. ..... proccess helps in speeding up the rate of sedimentation
18. A mixture contains two or more substances that can be separated easily
19. Method '' Hand picking '' can be used for
20. Condensation is ..... to evaporation
21. It is obtained by mixing two or more solids
22. The direction of wind plays an important role in the process of winnowing.
23. Grain and husk can be separated by the process of decantation? Say true or false
24. Pick the correct example of Pure substance
25. No substance in nature is 100 percent .....
26. In which of the following 1 tablespoon of sugar will dissolve quickly?
27. More sugar can get dissolved in .....
28. The process of separation of tea leaves by strainer is called
29. Name the process used to separate heavier and lighter components of a mixture.
30. During summer, Boojho carries water in a transparent plastic bottle to his school. One day he left his bottle in the school. The bottle still had some water left in it. The following day, he observed some water droplets on the inner surface of the empty portion of the bottle. These droplets of water were formed due to
31. Salt is obtained from the seawater by drying it in the sun.The process is known as .....
32. Boojho's grandmother is suffering from diabetes. Her doctor advised her to take Lassi with less fat content. Which of the following methods would be most appropriate for Boojho to prepare it?
33. A pure substance has a fixed melting and boiling points.
34. If the impurities are larger then which separation method is used?[Assume that the impurities are not always magnetic]
35. Materials that allow light to pass through it is called .....
36. In the process of separation of clean water from muddy water, clean water is called:
37. It is an example of pure substance.
38. Statement A:A mixture of cement and pebbles can be separated by using the sieve with small poresStatement B:A sieve with small pores will allow only small cement particles to pass through and will hold back the pebbles
39. Find the method to separate sand and water from their mixture
40. Sieving is used for separating two substances with ..... sizes.
41. If you want to separate dust from grains? What method will you use?
42. What is the method used to separate a mixture of sand and water?
43. You might have observed the preparation of ghee from butter and cream at home. Which method(s) can be used to separate ghee from the residue? (i) Evaporation (ii) Decantation (iii) Filtration (iv) Churning Which of the following combination is the correct answer?
44. The liquid above the sediment is called Superpatent
45. You want to dissolve sugar in water, for preparing lemonade. will you add ice before or after adding sugar?
46. A ..... is one in which no more of that substance can bedissolved.
47. The constituents of all mixtures can be seen separately
48. When do we mostly use handpicking?
49. Seeds and solid particles of pulp from fruit juices are separated by the method of-
50. How many mixtures are there
51. Mixture may be solid, liquid or .....
52. Which process is used to separate salt from water
53. Which process uses a paper to catch the solids?
54. Name a method which is used to obtain a solid substance that is dissolved in a liquid
55. On an average a sea water has ..... of edible salt in it
56. When is decantation used for separation?
57. Does sedimentation make water completely clear?
58. Paheli asked for a glass of water from Boojho. He gave her a glass of ice cold water. Paheli observed some water droplets on the outer surface of the glass and asked Boojho how these droplets of water were formed? Which of the following should be Boojho's answer?
59. Pure substances are made up of the same kind of atoms.
60. While conducting an experiment, Rahul noticed that the particles of a solid were settling down in the liquid he was using. This process is known as
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