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Air around Us T...

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  • Question 1
    1 / -0

    The blanket of gases that surrounds the earth is called __________.

  • Question 2
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    What is not true about air?

  • Question 3
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    Identify the gas "Odourless, Colourless, Heavier than air, supports combustion"

  • Question 4
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    Which of the following statements is incorrect?

  • Question 5
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    Directions For Questions

    Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

    (i) Bubbles of air came out from the bottle.

    (ii) Some water entered the bottle.

    (iii) Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.

    (iv) No bubbles formed, only water entered the bottle.

    ...view full instructions

    Which observations is/are correct?

  • Question 6
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    A gas is colourless, odourless, heavier than air and extinguishes fire. Name the gas?

  • Question 7
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    Which one of the following has the major part in air?

  • Question 8
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    Removal of water from plant bodies in the form of vapours is called__________?

  • Question 9
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    Clothes dry faster when there is ______ water vapour in air.

  • Question 10
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    Wind does not help in the movement of which of the following?

  • Question 11
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    Mountaineers carry oxygen cylinders with them because?

  • Question 12
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    Which one of the following statement is TRUE?

  • Question 13
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    Which gas present in atmosphere allows substances to burn?

  • Question 14
    1 / -0

    Hot air balloon rises up in the air because?

  • Question 15
    1 / -0

    Which gas is produced by plants during photosynthesis?

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