Matter Around Us - Important Question Paper

6th Standard

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50

    Part A

    10 x 1 = 10
  1. _________ is not made of matter

    (a)

    gold ring

    (b)

    iron nail

    (c)

    light ray

    (d)

    oil drop

  2. 200 ml of water is poured into a bowl of 400ml capacity. The volume of water now will be

    (a)

    400 ml

    (b)

    600 ml

    (c)

    200 ml

    (d)

    800 ml

  3. Seeds from water-melon can be removed by ____________ method.

    (a)

    hand-picking

    (b)

    filtration

    (c)

    magnetic separation

    (d)

    decantation

  4. Lighter impurities like dust, when mixed with rice or pulses, can be removed by __________

    (a)

    filtration

    (b)

    sedimentation

    (c)

    decantation

    (d)

    winnowing

  5. ___________ of is essential to perform winnowing activity.

    (a)

    Rain

    (b)

    Soil

    (c)

    Water

    (d)

    Air

  6. Filtration method is effective in separating ___________ mixture

    (a)

    solid-solid

    (b)

    solid-liquid

    (c)

    liquid-liquid

    (d)

    liquid-gas

  7. From the following ___________ is not a mixture

    (a)

    Coffee with milk

    (b)

    lemon juice

    (c)

    water

    (d)

    ice cream embedded with nuts.

  8. All the matter made of __________

    (a)

    Particles

    (b)

    Atoms

    (c)

    Elements

    (d)

    Mixture

  9. A standard sheet of paper is about___________ atoms thick.

    (a)

    Thousands

    (b)

    Crores

    (c)

    Lakhs

    (d)

    Million

  10. A drop of water contains about____________ water particles.

    (a)

    1021

    (b)

    1012

    (c)

    1022

    (d)

    1020

  11. Part B

    6 x 2 = 12
  12. Define the term matter.

  13. Why do we separate mixtures?

  14. Give an example for mixture and justify your answer with reason.

  15. Define Sedimentation.

  16. Give the main difference between a pure substance and an impure substance.

  17. Part C

    2 x 5 = 10
  18. Distinguish between properties of Solid, liquid, gas. Draw suitable diagram

  19. Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water and coins. Draw a flowchart to show the separation process.

  20. Part D

    6 x 3 = 18
  21. A rubber ball changes its shape on pressing. Can it be called a solid?

  22. Why do gases not have fixed shape?

  23. How can you separate a mixture of a large quantity of tiny bits of paper mixed with pulses/dal?

  24. What is meant by food adulteration?

  25. Mr.Raghu returns home on a hot summer day and wants to have buttermilk. Mrs.Raghu has only curds. What can she do to get buttermilk? Explain

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