Term 2 Air One Mark Questions with Answer

8th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 14
    5 x 1 = 5
  1. Which of the following is true about oxygen?

    (a)

    Completely burning gas

    (b)

    Partially burning gas

    (c)

    Doesn’t support burning

    (d)

    Supports burning

  2. Aerated water contains

    (a)

    air

    (b)

    oxygen

    (c)

    carbon dioxide

    (d)

    nitrogen

  3. Solvay process is a method to manufacture

    (a)

    lime water

    (b)

    aerated water

    (c)

    distilled water

    (d)

    sodium carbonate

  4. Carbon dioxide with water changes

    (a)

    blue litmus to red

    (b)

    red litmus to blue

    (c)

    blue litmus to yellow

    (d)

    doesn’t react with litmus

  5. Which of the following is known as azote?

    (a)

    Oxygen

    (b)

    Nitrogen

    (c)

    Sulpher

    (d)

    Carbon dioxide

  6. 5 x 1 = 5
  7. ______ is called as vital life

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    Oxygen

  8. Nitrogen is ________ than air.

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    lighter

  9. ________ is used as a fertilizer.

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    Nitrogen (Ammonia)

  10. Dry ice is used as a _________.

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    refrigerent

  11. The process of conversion of iron into hydrated form of oxides is called ___________.

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    rusting

  12. 4 x 1 = 4
  13. Nitrogen

  14. (1)

    Fertilizer

  15. Oxygen

  16. (2)

    Refrigerator

  17. Carbon dioxide

  18. (3)

    Fire extinguisher

  19. Dry ice

  20. (4)

    Respiration in living animals

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