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Air around Us T...

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  • Question 1
    1 / -0

    Which of the following statements is incorrect?

  • Question 2
    1 / -0

    Wind does not help in the movement of which of the following?

  • Question 3
    1 / -0

    What is not true about air?

  • Question 4
    1 / -0

    Mountaineers carry oxygen cylinders with them because

  • Question 5
    1 / -0

    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.

    1. Bubbles of air came out from the bottle.
    2. Some water entered the bottle.
    3. Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
    4. No bubbles formed, only water entered the bottle.

    Which observation(s) is/are correct?

  • Question 6
    1 / -0

    Which of the following components of air is present in the largest amount in the atmosphere?

  • Question 7
    1 / -0

    The components of air which are harmful to living beings are

  • Question 8
    1 / -0

    Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain

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  • Unanswered - 8

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