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Is moist air heavier than dry air? Expla...

Is moist air heavier than dry air? Explain.

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Dry air is heavier than moist air because dry air contains mainly `N_(2) and O_(2)` whose vapour densities are higher than the vapour density of `H_(2)O` present in moist air. [vapour densities of `N_(2),O_(2)` and `H_(2)O` are 14,16 and 9 respectively].
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Knowledge Check

  • The velocity of sound in moist air is greater than that in dry air, became

    A
    moist air is comparatively light
    B
    moist air is comparatively heavy
    C
    The pressure of moist air is low
    D
    the pressure of moist air is high

  • Gas lighter than air is

    A
    `NH_3`
    B
    `H_2S`
    C
    `Cl_2`
    D
    `CO_2`

  • Which of the following gases are heavier than air?

    A
    Ar
    B
    moist air
    C
    `O_2`
    D
    Ne

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