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Chapter 15 – Air Around Us

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  1. Question 1 of 19
    1. Question

    What do plant and animal matter produce on burning ?

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  2. Question 2 of 19
    2. Question

    What do plant animal matter consume on burning ?

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  3. Question 3 of 19
    3. Question

    contains few gases and fire dust particle.

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  4. Question 4 of 19
    4. Question

    Mountaineers carry cylinders with them.

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  5. Question 5 of 19
    5. Question

    The properties of air are:

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  6. Question 6 of 19
    6. Question

    When the bottle was tilted, the air was able to come out in the form of.

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  7. Question 7 of 19
    7. Question

    What is the percentage of nitrogen and oxygen in air ?

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  8. Question 8 of 19
    8. Question

    What is percentage of carbon dioxide and few other gases, water vapour, dust particles ?

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  9. Question 9 of 19
    9. Question

    Which component of air is used by green plants to make their food ?

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  10. Question 10 of 19
    10. Question

    Which gas in the atmosphere is essential for respiration ?

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  11. Question 11 of 19
    11. Question

    The envelope of air that surrounds the earth is known as:

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  12. Question 12 of 19
    12. Question

    Air in motion is called:

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  13. Question 13 of 19
    13. Question

    Nitrogen, oxygen, carbon dioxide, water vapour and a few gases are:

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  14. Question 14 of 19
    14. Question

    What makes a firki rotate ?

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  15. Question 15 of 19
    15. Question

    During storms the wind blows at a very.

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  16. Question 16 of 19
    16. Question

    Burning occurs in the presence of which gas ?

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  17. Question 17 of 19
    17. Question

    Why do plants and animals consume oxygen ?

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  18. Question 18 of 19
    18. Question

    The burning of fuel also produces

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  19. Question 19 of 19
    19. Question

    Why do we feel suffocation if some material is burning in a closed room ?

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admin2022-04-28T12:45:09+00:00

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