Chemistry in Everyday Life Model Question Paper

6th Standard

    Reg.No. :
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Science

Time : 02:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. Soaps were originally made from________.

    (a)

    proteins

    (b)

    animal fats and vegetable oils

    (c)

    chemicals extracted from the soil

    (d)

    foam booster

  2. Natural adhesives are made from ________.

    (a)

    Protein

    (b)

    fat

    (c)

    starch

    (d)

    vitamins

  3. _______________ results in the change of the substance;

    (a)

    Natural indicator

    (b)

    Chemical change

    (c)

    Physical change

    (d)

    Chemistry

  4. In _________________ only the shape, size or volume changes.

    (a)

    Natural indicator

    (b)

    Chemical change

    (c)

    Physical change

    (d)

    Chemistry

  5. _____________ is a soft white or grey, naturally available mineral.

    (a)

    Gypsum

    (b)

    Chemical change

    (c)

    Physical change

    (d)

    Chemistry

  6. 5 x 1 = 5
  7. ____________ is called as farmer’s best friend.

    ()

    Earthworm

  8. _________ is an example for natural adhesive.

    ()

    Strach

  9. In 1824, _____________ invented Portland cement by burning finely ground chalk and clay in a kiln.

    ()

    Joseph Aspdin

  10. _________________ are organic or inorganic materials that we add to the soil to provide one or more nutrients to the soil.

    ()

    Fertilizers

  11. ___________ are the three important nutrients among the various nutrients needed for the growth of plants.

    ()

    Nitrogen (N), Phosphorous (P) and Potassium (K)

  12. 5 x 1 = 5
  13. Concentrated phenol is used as a disinfectant.

    (a) True
    (b) False
  14. Plaster of Paris is obtained from heating gypsum.

    (a) True
    (b) False
  15. NPK are the primary nutrients for plants.

    (a) True
    (b) False
  16. Phenol irritates when exposed on human skin.

    (a) True
    (b) False
  17. Cement becomes softer when it is mixed with water.

    (a) True
    (b) False
  18. 5 x 1 = 5
  19. Soap

  20. (1)

    C6H5 OH

  21. Gypsum

  22. (2)

    CaSO4. 2H2O

  23. Phenol

  24. (3)

    NaOH

  25. Water

  26. (4)

    CaSO4 2H2O

  27. gypsum

  28. (5)

    H2O

    4 x 2 = 8
  29. What are the three main constituents of soap?

  30. Mention any three physical properties of phenol.

  31. What are the ingredients of the cement?

  32. What is meant by chemistry?

  33. 4 x 3 = 12
  34. Why earthworm is called as farmer’s friend?

  35. Explain the process of manufacturing cement.

  36. What are uses of Gypsum?

  37. Name some artificial adhesive.

  38. 2 x 5 = 10
  39. How are detergents manufactured?

  40. Differentiate organic and inorganic fertilizers.

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